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Meaning of $? (dollar question mark) in shell scripts
...about to do vendor/bin/drush status bootstrap | grep -q $(vendor/bin/drush php-eval 'if (function_exists("t")) echo t("Successful");') &> /dev/null;. If I had to put that in a single line if [ ... ] it would be terribly unreadable. I plan to store the output of that line to a variable so I ca...
Precedence and bitmask operations
...
You are actually doing this:
var_dump(0b10 & (0b01 == 0));
var_dump(0b10 & (0b01 != 0));
Try:
var_dump((0b10 & 0b01) == 0);
var_dump((0b10 & 0b01) != 0);
...
e.printStackTrace equivalent in python
...r: integer division or modulo by zero
(From http://blog.tplus1.com/index.php/2007/09/28/the-python-logging-module-is-much-better-than-print-statements/ via How to print the full traceback without halting the program?)
shar...
Wrong parameter count for defined() - PHP - 清泛IT论坛，有思想、有深度
1. define defined混淆了
意见反馈考虑改为bbs：[url]https://bbs.tsingfun.com/forum.php?mod=forum...
意见反馈考虑改为bbs：https://bbs.tsingfun.com/forum.p ... ypeid&typeid=63已修改。
App Inventor 2 如何跟踪查看Web客户端的请求标头？ - App Inventor 2 中文...
...看呢？可以采用一种迂回的方式，将请求临时发到指定的php网页，php代码简单输出请求标头信息，Web客户端输出响应信息就可以查看了：
php代码如下：
<?php
$headers = getallheaders();
foreach ($headers as $name => $value){
&nbs...
Doing HTTP requests FROM Laravel to an external API
... Snoek WAS directing you toward an official Laravel package. It is pre-installed in the laravel vendor group.
– parker_codes
Nov 18 '17 at 23:09
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