BERTOLDO提出的问题

BERTOLDO

Asked: 2022-10-06 21:40:10 +0800 CST

解释函数中表达式的含义

2

给定以下功能：

function meanMode(numbers) {
  const result = numbers.reduce((count, number) => {
    count[number] = (count[number] || 0) + 1;
    return count;
  }, {});

  return result;
}

它返回一个数组，其中键是数字，值是原始数组中的重复次数。用过Array.prototype.reduce()。但是，我不明白这一行：count[number] = (count[number] || 0) + 1;

具体来说，一个记录(count[number] || 0)。这是什么意思？

BERTOLDO

Asked: 2022-09-29 22:11:02 +0800 CST

如何修复正则表达式使其正常工作？

1

你需要写一个正则表达式。该行应包含：

至少一个数字
在不同的寄存器中至少有两个拉丁字母
行中至少一个字符! ? . , + - * / =
至少包含10字符

这是我的努力

/[a-z]{1,}[A-Z]{1,}[0-9]{1,}[!\?\.,\+\*/=]{1,0}{10,}/

但是，它给出了很多错误。显然，我不明白如何制作“至少”条件。如何添加regexp它以使其正确？

更新

对我来说，这很有效：

/^(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z])(?=.*[!?.,+*\/=-]).{10,}$/

BERTOLDO

Asked: 2022-09-22 16:56:13 +0800 CST

为什么粘性块忽略左右坐标？

0

我需要拉伸搜索块，使其占据屏幕的整个宽度。这个块以给定的宽度放置在主容器中，这可能是粘性块不起作用的原因，但是，它也应该像一个绝对定位的块并忽略父级（位置：relative 不包含在主容器中）。

如何拉伸粘性块以适应屏幕的整个宽度？

/*блок родитель*/
.main {
    width: 1280px;
    flex-grow: 1;
    margin: auto;
}

/* search box*/
.search-box {
    border-bottom: 2px solid #ffffff;
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
}

BERTOLDO

Asked: 2020-06-16 03:56:51 +0800 CST

如何从awk中的字段中提取特定片段？

3

有一个名为 PROXY.1.log 的日志文件，需要确定 10 个服务器（$7 字段中的服务器名称）从中接收到的信息量最大（$5 字段中的信息量）

服务器名称有时会重复，因此您需要确定每个服务器的信息总量，然后显示信息最多的 10 个服务器。

代理服务器的log-a文件条目的结构：

965332284.687 126107 10.1.6.0 TCP_MISS/503 1061 GET ftp://ftp.ruhr-uni-bochum.de/.subdisc3/local/winnt/2000/fixes/usa/sp1/sp1network.exe alex DIRECT/ftp.ruhr-uni-bochum.de -
965332324.957 126090 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332336.987 129098 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332348.015 239306 10.1.6.0 TCP_MISS/504 1066 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332373.817 123096 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332377.837 129099 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332411.365 237443 10.1.6.0 TCP_MISS/504 1048 GET ftp://ftp.darmstadt.gmd.de/pub/pc/Win2k/microsoft/fixes/sp1/en/sp1network.exe alex DIRECT/ftp.darmstadt.gmd.de -
965332439.117 150093 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332470.987 132093 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332472.967 132089 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332483.137 219058 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332490.137 192090 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332514.167 125964 10.1.6.0 TCP_MISS/503 1061 GET ftp://ftp.ruhr-uni-bochum.de/.subdisc3/local/winnt/2000/fixes/usa/sp1/sp1network.exe alex DIRECT/ftp.ruhr-uni-bochum.de -
965332528.157 173922 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332532.458 153276 10.1.6.0 TCP_MISS/503 1039 GET ftp://ftp.hu-berlin.de/pub/windows/fixes/w2000/sp1/english/sp1network.exe alex DIRECT/ftp.hu-berlin.de -
965332554.127 123093 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332555.157 126095 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332588.327 143873 10.1.6.0 TCP_MISS/504 1034 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332592.437 123099 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332607.457 129096 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332651.327 132098 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332653.297 132095 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332706.337 146843 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332714.477 179843 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332734.467 123099 10.1.6.0 TCP_MISS/503 1047 GET ftp://ftp.darmstadt.gmd.de/pub/pc/Win2k/microsoft/fixes/sp1/en/sp1network.exe alex DIRECT/ftp.darmstadt.gmd.de -
965332735.477 126090 10.1.6.0 TCP_MISS/503 1039 GET ftp://ftp.mathematik.uni-marburg.de/pub/mirror/w2ksp/en-us/sp1network.exe alex DIRECT/ftp.mathematik.uni-marburg.de -
965332760.215 191697 10.1.6.0 TCP_MISS/504 1066 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332775.457 125723 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332784.647 125972 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332822.637 123042 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332824.627 123101 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332855.798 140926 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332862.907 123097 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332864.135 239427 10.1.6.0 TCP_MISS/504 1040 GET ftp://ftp.hu-berlin.de/pub/windows/fixes/w2000/sp1/english/sp1network.exe alex DIRECT/ftp.hu-berlin.de -
965332895.307 146475 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332923.787 132098 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332933.797 144096 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332953.057 123091 10.1.6.0 TCP_MISS/503 1061 GET ftp://ftp.ruhr-uni-bochum.de/.subdisc3/local/winnt/2000/fixes/usa/sp1/sp1network.exe alex DIRECT/ftp.ruhr-uni-bochum.de -
965333004.947 123096 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965333005.947 126089 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965333015.078 176088 10.1.6.0 TCP_MISS/503 1039 GET ftp://ftp.mathematik.uni-marburg.de/pub/mirror/w2ksp/en-us/sp1network.exe alex DIRECT/ftp.mathematik.uni-marburg.de -
965333021.078 216044 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965333030.077 134888 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965333043.217 123092 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965333055.167 125943 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965333104.097 132089 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965333132.057 146711 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965333157.207 146925 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965333162.107 192030 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965333185.257 123091 10.1.6.0 TCP_MISS/503 1039 GET ftp://ftp.hu-berlin.de/pub/windows/fixes/w2000/sp1/english/sp1network.exe alex DIRECT/ftp.hu-berlin.de -
965333201.428 141255 10.1.6.0 TCP_MISS/503 1047 GET ftp://ftp.darmstadt.gmd.de/pub/pc/Win2k/microsoft/fixes/sp1/en/sp1network.exe alex DIRECT/ftp.darmstadt.gmd.de -
965333211.397 192092 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965333226.557 126062 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965333264.427 188923 10.1.6.0 TCP_MISS/504 1062 GET ftp://ftp.ruhr-uni-bochum.de/.subdisc3/local/winnt/2000/fixes/usa/sp1/sp1network.exe alex DIRECT/ftp.ruhr-uni-bochum.de -
965333279.428 129098 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965333281.417 129095 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965333291.517 125857 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -

$1 - 请求时间；

$5 是以字节为单位传输的数据量；

$6 - 请求类型；

$7 - 请求的资源；

$8 - 用户名；

这是代码本身：

function idx_of_max(a) {
i_max = 0;
for (i in a) {
    if (a[i] > a[i_max]) {
        i_max = i;
    }
}
return i_max;
}

{
    servers[$7] += $5;
}

END {
for (n = 1; n <= 10; n++) {
        srv = idx_of_max(servers);
        if (!srv) {
           break;
        }
        print n ": " srv " = " servers[srv];
        delete servers[srv];
    }
}

这里的问题是：有必要指定服务器的名称。

也就是说，结果应该是这样的：

怎么做？

BERTOLDO

Asked: 2020-04-24 02:20:42 +0800 CST

确定仅使用 AWK 从中获取信息最多的 10 个 Internet 服务器

3

有一个代理服务器日志文件，需要确定10台服务器（$7字段中的服务器名称）从中接收到的信息量最大（$5字段中的信息量）

服务器名称有时会重复，因此您需要确定每个服务器的信息总量，然后显示信息最多的 10 个服务器。

代理服务器的log-a文件条目的结构：

$1 - 请求时间；

$5 是以字节为单位传输的数据量；

$6 - 请求类型；

$7 - 请求的资源；

$8 - 用户名；

日志文件中的片段：

965332284.687 126107 10.1.6.0 TCP_MISS/503 1061 GET ftp://ftp.ruhr-uni-bochum.de/.subdisc3/local/winnt/2000/fixes/usa/sp1/sp1network.exe alex DIRECT/ftp.ruhr-uni-bochum.de -
965332324.957 126090 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332336.987 129098 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332348.015 239306 10.1.6.0 TCP_MISS/504 1066 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332373.817 123096 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332377.837 129099 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332411.365 237443 10.1.6.0 TCP_MISS/504 1048 GET ftp://ftp.darmstadt.gmd.de/pub/pc/Win2k/microsoft/fixes/sp1/en/sp1network.exe alex DIRECT/ftp.darmstadt.gmd.de -
965332439.117 150093 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332470.987 132093 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332472.967 132089 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332483.137 219058 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332490.137 192090 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332514.167 125964 10.1.6.0 TCP_MISS/503 1061 GET ftp://ftp.ruhr-uni-bochum.de/.subdisc3/local/winnt/2000/fixes/usa/sp1/sp1network.exe alex DIRECT/ftp.ruhr-uni-bochum.de -
965332528.157 173922 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332532.458 153276 10.1.6.0 TCP_MISS/503 1039 GET ftp://ftp.hu-berlin.de/pub/windows/fixes/w2000/sp1/english/sp1network.exe alex DIRECT/ftp.hu-berlin.de -
965332554.127 123093 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332555.157 126095 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332588.327 143873 10.1.6.0 TCP_MISS/504 1034 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332592.437 123099 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332607.457 129096 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332651.327 132098 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332653.297 132095 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332706.337 146843 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332714.477 179843 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332734.467 123099 10.1.6.0 TCP_MISS/503 1047 GET ftp://ftp.darmstadt.gmd.de/pub/pc/Win2k/microsoft/fixes/sp1/en/sp1network.exe alex DIRECT/ftp.darmstadt.gmd.de -
965332735.477 126090 10.1.6.0 TCP_MISS/503 1039 GET ftp://ftp.mathematik.uni-marburg.de/pub/mirror/w2ksp/en-us/sp1network.exe alex DIRECT/ftp.mathematik.uni-marburg.de -
965332760.215 191697 10.1.6.0 TCP_MISS/504 1066 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332775.457 125723 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332784.647 125972 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332822.637 123042 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332824.627 123101 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332855.798 140926 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965332862.907 123097 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332864.135 239427 10.1.6.0 TCP_MISS/504 1040 GET ftp://ftp.hu-berlin.de/pub/windows/fixes/w2000/sp1/english/sp1network.exe alex DIRECT/ftp.hu-berlin.de -
965332895.307 146475 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332923.787 132098 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332933.797 144096 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965332953.057 123091 10.1.6.0 TCP_MISS/503 1061 GET ftp://ftp.ruhr-uni-bochum.de/.subdisc3/local/winnt/2000/fixes/usa/sp1/sp1network.exe alex DIRECT/ftp.ruhr-uni-bochum.de -
965333004.947 123096 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965333005.947 126089 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965333015.078 176088 10.1.6.0 TCP_MISS/503 1039 GET ftp://ftp.mathematik.uni-marburg.de/pub/mirror/w2ksp/en-us/sp1network.exe alex DIRECT/ftp.mathematik.uni-marburg.de -
965333021.078 216044 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965333030.077 134888 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965333043.217 123092 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965333055.167 125943 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965333104.097 132089 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965333132.057 146711 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965333157.207 146925 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965333162.107 192030 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965333185.257 123091 10.1.6.0 TCP_MISS/503 1039 GET ftp://ftp.hu-berlin.de/pub/windows/fixes/w2000/sp1/english/sp1network.exe alex DIRECT/ftp.hu-berlin.de -
965333201.428 141255 10.1.6.0 TCP_MISS/503 1047 GET ftp://ftp.darmstadt.gmd.de/pub/pc/Win2k/microsoft/fixes/sp1/en/sp1network.exe alex DIRECT/ftp.darmstadt.gmd.de -
965333211.397 192092 10.1.6.0 TCP_MISS/503 1065 GET http://mschus.www.conxion.com/download/win2000platform/sp/sp1/nt5/en-us/sp1network.exe alex DIRECT/mschus.www.conxion.com -
965333226.557 126062 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965333264.427 188923 10.1.6.0 TCP_MISS/504 1062 GET ftp://ftp.ruhr-uni-bochum.de/.subdisc3/local/winnt/2000/fixes/usa/sp1/sp1network.exe alex DIRECT/ftp.ruhr-uni-bochum.de -
965333279.428 129098 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965333281.417 129095 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -
965333291.517 125857 10.1.6.0 TCP_MISS/503 1033 GET ftp://ftp.ism.ru/pub/drivers/software/microsoft/win2000/sp1network.exe alex DIRECT/ftp.ism.ru -

仅使用 awk 代码如何做到这一点？

BERTOLDO

Asked: 2020-04-09 06:05:23 +0800 CST

我怎样才能使它在按下一个键时，将一条消息发送到 ws-server，并在释放时发送另一条消息？

0

我怎样才能使它在按下一个键时，将一条消息发送到 ws-server，并在释放时发送另一条消息？

有以下代码：

let ws = new WebSocket("ws://192.168.1.73:8001");

//посылаем серверу значения с клавиатуры
document.onkeypress = function(event) {
    ws.send(event.key);
}

BERTOLDO

Asked: 2020-03-26 21:42:57 +0800 CST

JS 上的虚拟操纵器（操纵杆）

0

项目中需要创建一个摇杆模拟器，在机械手的某个位置，根据X、Y坐标向服务器发送某个命令。

左上角的灰色方块是机械手本身。它应该在深灰色区域的中心，初始值 X:0 Y:0

使用鼠标进行移动（点 -> 单击 -> 拖动到该区域中的任意点）

请告诉我，从哪里开始？由于我是 JS 的初学者，完全没有经验，谷歌搜索后发现他们使用的是 jQuery 框架，但不完全清楚该采用哪些方法。

html:

<!DOCTYPE html>
<html lang="ru">
 <head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  <title>Joystick</title>
  <script src="joy.js"></script>
  <script src="jquery/jquery-1.9.1.js"></script>
  <script src="jquery/jquery-ui.js"></script>
  <link rel="stylesheet" href="style.css">
 </head>

 <body>

  <div id="joyStick" class="joyStick">
    <div class="joyManipulator"></div>
  </div>

  <div id = "panel">
    <center>
    <p>
    <input type="text" value="0" id="ox" /><br />
    <input type="text" value="0" id="oy" /><br /></p>
    <button id = "reset">reset</button><p>
    </center>
  </div>

 </body>
</html>

CSS：

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    overflow-x:hidden;
}

body{
    background-color: #2e2e2e;
}

.joyStick {
    margin: 500px auto;
    margin-bottom: 20px;
    width:200px; 
    height:200px; 
    background:#222121; 
    border:1px solid black;
    border-radius: 10px;
    border-width: 1px;
    position:relative;
}

.joyManipulator {
    width:40px;
    height:40px;
    position:absolute;
    border-radius:10px;
    background:rgb(206, 206, 206);
    cursor:pointer;
}

#panel {
    margin: 0 auto;
    width: 200px;
    background-color: #222121;
    border:1px solid black;
    border-radius: 10px;
    border-width: 1px;
}

#reset {
    padding: 10px;
    color: rgb(255, 255, 255);
    font-family: Arial;
    border:1px solid rgb(255, 255, 255);
    border-width: 1px;
    background-color: rgb(47, 47, 47);
    cursor: pointer;
}

#ox, #oy {
    margin: 0 auto;
    padding: 5px;
}

BERTOLDO

Asked: 2020-03-25 06:35:54 +0800 CST

服务端不理解客户端发送的具体值

2

为什么服务器不接受键盘发送的特定值？

在浏览器控制台中，显示值，例如：w, s, d, a

在服务器控制台中，这些值是这样显示的：[object KeyboardEvent], [object KeyboardEvent], [object KeyboardEvent], [object KeyboardEvent]

如何让服务器准确地接受客户端从键盘发送给它的值？

JS：

document.onkeypress = function(event) {
    console.log(event);
    ws.send(event);
}

BERTOLDO

Asked: 2020-03-25 05:16:00 +0800 CST

如何在画布中显示从 websocket 服务器接收到的图像？

-1

有这样一种情况：服务器从网络摄像头发送 jpg 图像，客户端使用下面的 js 脚本抓取它们，但图像只是放在“列中”，而不是“视频”。我如何将图像放在画布上，以便图像在同一个地方更新（这样我们最终会得到一种视频广播）？

JS：

        var input = document.getElementById("input");

        let ws = new WebSocket("ws://localhost:8001");  

        ws.onmessage = m => {
            let image = new Image();
            image.src = URL.createObjectURL(m.data);
            document.body.append(image);
        }

HTML：

<!DOCTYPE html>
<html lang="ru">
 <head>
    <meta charset="utf-8">
    <title>Panel</title>
    <meta name="viewport" content="minimum-scale=1.0, width=device-width, maximum-scale=1.0, user-scalable=no">
 </head>

 <body>
    <div class="header">
        <a href = "index.html">
            <h2 id = "log">Control Panel</h2>
        </a>
    </div>

    <canvas id="canvas" width="640" height="480" style="border:1px solid #d3d3d3;">

    </canvas>

    <div class = "control">
        <button class="button button1">UP</button>
        <button class="button button2">DOWN</button>
        <button class="button button3">LEFT</button>
        <button class="button button4">RIGHT</button>
    </div>
    <script src = "script.js"></script>
 </body> 
</html>

BERTOLDO

Asked: 2020-03-24 21:30:54 +0800 CST

如何在 JS 中从 WebSocket 服务器捕获 jpg？

3

服务器发送 jpg 图像。如何在 JS 中实现“抓取”图像并将其显示在 html 页面上的机制？

<!DOCTYPE html>
<html lang="ru">
 <head>
    <meta charset="utf-8">
    <title>Panel</title>
    <meta name="viewport" content="minimum-scale=1.0, width=device-width, maximum-scale=1.0, user-scalable=no">
    <link rel="stylesheet" href="styles.css">
 </head>

 <body>
    <script src = "script.js"></script>

    <div class="header">
        <a href = "index.html">
            <h2 id = "log">Testing Panel</h2>
        </a>
    </div>
    <!--<div id = "camera"></div>-->

    <canvas id="canvas" width="640" height="480" style="border:1px solid #d3d3d3;">
        <img src=""></img>
    </canvas>

    <div class = "control">
        <button class="button button1">UP</button>
        <button class="button button2">DOWN</button>
        <button class="button button3">LEFT</button>
        <button class="button button4">RIGHT</button>
    </div>

    <input value = "set..." id = "input" />

 </body> 
</html>

JS

var input = document.getElementById("input");

const ws = new WebSocket("ws://localhost:8001");
        var status = document.querySelector("#status");

        //открытие соединения
        ws.onopen = function(event) {
            status.innerHTML = "соединение установлено";
            window.alert("online");
            while (true){
                status.innerHTML = "kk";

            }
        }

        //закрытие соединения
        ws.onclose = function(event) {
            status.innerHTML = "соединение разорвано";
            window.alert("offline");
        }

        //получение данных
        ws.onmessage = function(event) {

        }

        //возникновение ошибки
        ws.onerror = function(event){

        }

BERTOLDO

Asked: 2020-03-05 06:26:27 +0800 CST

如何在 Unix shell 中查找以大写字母开头的子目录（文件夹计为文件）中的文件数？

1

您需要计算以大写字母开头的子目录中的文件数。如何使用标准的 Unix shell 过滤器来做到这一点？

BERTOLDO

Asked: 2020-03-05 05:03:30 +0800 CST

如何在 Unix 上使用 shell 计算子目录中的文件数？

3

如何在 Unix 上使用 shell 计算子目录中的文件数？

BERTOLDO

Asked: 2020-01-22 20:10:39 +0800 CST

“AttributeError：'NoneType' 对象没有属性 'follow_player”' Python 中的错误

2

在使用 Python Arcade 库开发一个简单的街机游戏时，我遇到了这个困难：

我需要在另一个类的函数中调用一个类对象的方法，但是python看不到。你如何“打开”火箭的 follow_player() 方法？

class MyGame(arcade.View):
    def __init__(self):

            self.rocket.list = arcade.SpriteList()
            self.rocket = None

            # Создание ракет
            for i in range(ROCKET_COUNT):

            # Создаем экземпляр ракеты
                 rocket = Rocket("assets/Rocket2.png", SPRITE_SCALING_ROCKET)
                 # Позиция ракеты
                 rocket.center_x = self.player_sprite.center_x + 
                                   random.choice([random.randint(-1500, -500),                                                    
                                   random.randint(500, 1500)])

                 rocket.center_y = self.player_sprite.center_y + 
                                   random.choice([random.randint(-1500, -500),                                                                          
                                   random.randint(500, 1500)])
                 rocket.angle = 180

                 # Добавляем ракеты в список для ракет
                 self.rocket_list.append(rocket)

    def on_update(self, delta_time):
            for rocket in self.rocket_list:
                self.rocket.follow_player(self.player_sprite)

class Rocket(arcade.Sprite):
    """ Класс ракеты """

    def follow_player(self, player_sprite):
        """ Функция перемещения ракеты к игроку (аргумент функции) """

        # траектория ракеты, обусловленная изменениями координат
        self.center_x += self.change_x
        self.center_y += self.change_y

        start_x = self.center_x
        start_y = self.center_y

        # Получение места назначения для ракеты #destination
        dest_x = player_sprite.center_x
        dest_y = player_sprite.center_y

        # Расчет: как доставить ракету в пункт назначения (к игроку)
        # Расчет угла(по которому будет двигаться ракета) в радианах между
        # начальными точками и конечными точками.
        x_diff = dest_x - start_x
        y_diff = dest_y - start_y

        # расчет угла
        n = 2.25  # 2.25
        angle = math.atan2(y_diff + n, x_diff + n)

        # С учетом угла вычислим наше изменение х и изменение у.
        self.change_x = math.cos(angle) * ROCKET_SPEED - n
        self.change_y = math.sin(angle) * ROCKET_SPEED - n

        angle_rad = math.radians(self.angle)
        self.angle += self.change_angle

        self.center_x += -ROCKET_SPEED * math.sin(angle_rad)  # * random.randint(1, 3)
        self.center_y += ROCKET_SPEED * math.cos(angle_rad)  # * random.randint(1, 3)

BERTOLDO

Asked: 2020-01-19 00:39:57 +0800 CST

请告诉我有关数值方法或数学模型的书籍以及 c++/python 中的代码示例

1

需要实现一些物理现象的数学模型。

请告诉我文献（最好带有 Python / C ++ 中的示例代码），如果它存在，或者指向引发类似主题的来源的链接。

先感谢您。

解释函数中表达式的含义

如何修复正则表达式使其正常工作？

为什么粘性块忽略左右坐标？

如何从awk中的字段中提取特定片段？

确定仅使用 AWK 从中获取信息最多的 10 个 Internet 服务器

我怎样才能使它在按下一个键时，将一条消息发送到 ws-server，并在释放时发送另一条消息？

JS 上的虚拟操纵器（操纵杆）

服务端不理解客户端发送的具体值

如何在画布中显示从 websocket 服务器接收到的图像？

如何在 JS 中从 WebSocket 服务器捕获 jpg？

如何在 Unix shell 中查找以大写字母开头的子目录（文件夹计为文件）中的文件数？

如何在 Unix 上使用 shell 计算子目录中的文件数？

“AttributeError：'NoneType' 对象没有属性 'follow_player”' Python 中的错误

请告诉我有关数值方法或数学模型的书籍以及 c++/python 中的代码示例

我看不懂措辞

请求的模块“del”不提供名为“default”的导出

"!+tab" 在 HTML 的 vs 代码中不起作用

我正在尝试解决“猜词”的问题。Python

可以使用哪些命令将当前指针移动到指定的提交而不更改工作目录中的文件？

Python解析野莓

问题：“警告：检查最新版本的 pip 时出错。”

帮助编写一个用值填充变量的循环。解决这个问题

尽管依赖数组为空，但在渲染上调用了 2 次 useEffect

数据不通过 Telegram.WebApp.sendData 发送

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