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Checking network connection

...the rest is simple. Google for "74.125.113.99 urllib". It will return thousands of open-source projects which incorporated the incorrect code. (for me, just the first page contains at least 5: nvpy, sweekychebot, malteseDict, upy, checkConnection). They are all broken now. – th...
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Easiest way to copy a single file from host to Vagrant guest?

...ou ask for the easiest way, I suggest using vagrant-scp. It adds a scp command to vagrant, so you can copy files to your VM like you would normally do with scp. Install via: vagrant plugin install vagrant-scp Use it like so: vagrant scp <some_local_file_or_dir> [vm_name]:<somewhere_on_...
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How do you log server errors on django sites

...hen playing with the development I can just set settings.DEBUG to True and if an error occures I can see it nicely formatted, with good stack trace and request information. ...
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How to start two threads at “exactly” the same time

The threads should start at same split second. I understand, if you do thread1.start() , it will take some milliseconds before the next execution of thread2.start() . ...
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How to uninstall npm modules in node js?

As commonly known, any npm module can be installed by running a simple command: npm install <module_name> . 21 Answe...
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Checking for NULL pointer in C/C++ [closed]

...ol NULL. They do not expose the opportunity for the accidental assignment. And they are clear and succinct. Edit: As SoapBox points out in a comment, they are compatible with C++ classes such as auto_ptr that are objects that act as pointers and which provide a conversion to bool to enable exactly...
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How to Display Selected Item in Bootstrap Button Dropdown Title

...d for Bootstrap 3.3.4: This will allow you to have different display text and data value for each element. It will also persist the caret on selection. JS: $(".dropdown-menu li a").click(function(){ $(this).parents(".dropdown").find('.btn').html($(this).text() + ' <span class="caret"><...
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What should a Multipart HTTP request with multiple files look like? [duplicate]

... to mind immediately: 1) write your loop as (print boundary, print stuff), and then after the for loop completes follow that with (print boundary with extra dashes). That's probably the easiest way. 2) write your for() loop to run whatever index variable you have down to 0, instead of up from 0. The...
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How to get rid of `deprecated conversion from string constant to ‘char*’` warnings in GCC?

So I'm working on an exceedingly large codebase, and recently upgraded to gcc 4.3, which now triggers this warning: 24 Answ...
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tcp端口状态ESTABLISHED、TIME_WAIT、CLOSE_WAIT 、SYN_RECV等详解 - C/C++...

tcp端口状态ESTABLISHED、TIME_WAIT、CLOSE_WAIT 、SYN_RECV等详解TCP状态转移要点TCP协议规定,对于已经建立的连接,网络双方要进行四次握手才能成功断开连接,如果缺少了其中某个步骤,将会使连接处于假死 TCP状态转移要点 TCP协议...