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How to suppress “unused parameter” warnings in C?
...line switch Wno-unused-parameter.
For example:
gcc -Wno-unused-parameter test.c
Of course this effects the whole file (and maybe project depending where you set the switch) but you don't have to change any code.
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How to check if running in Cygwin, Mac or Linux?
...GW64_NT" ]; then
# Do something under 64 bits Windows NT platform
fi
Testing
Linux (Ubuntu 12.04 LTS, Kernel 3.2.0) tested OK.
OS X (10.6.8 Snow Leopard) tested OK.
Windows (Windows 7 64 bit) tested OK.
What I learned
Check for both opening and closing quotes.
Check for missing parenthes...
各编程语言读写文件汇总 - C/C++ - 清泛网 - 专注C/C++及内核技术
...
// 写文件
using (StreamWriter sw = new StreamWriter(@"test.txt"))
{
sw.WriteLine("file content...");
sw.Flush();
sw.Close();
}
// 读文件
using (TextReader reader = new StreamReader("test.txt"))
{
while (reader.P...
Why would finding a type's initializer throw a NullReferenceException?
This has got me stumped. I was trying to optimize some tests for Noda Time, where we have some type initializer checking. I thought I'd find out whether a type has a type initializer (static constructor or static variables with initializers) before loading everything into a new AppDomain . To my ...
Using switch statement with a range of value in each case?
...;& x <= upper;
}
if (isBetween(num, 1, 5)) {
System.out.println("testing case 1 to 5");
} else if (isBetween(num, 6, 10)) {
System.out.println("testing case 6 to 10");
}
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How to tell Eclipse Workspace?
...ble to reproduce it. Each time I get the currently loaded workspace (I was testing on Juno). I also checked sources and in ChooseWorkspaceDialog.java and ChooseWorkspaceData.java, and it looks like it manages simple list of last time opened workspaces which is stored as a RECENT_WORKSPACES key in or...
JavaScript: What are .extend and .prototype used for?
...ired by base2 and Prototype
(function(){
var initializing = false, fnTest = /xyz/.test(function(){xyz;}) ? /\b_super\b/ : /.*/;
// The base Class implementation (does nothing)
this.Class = function(){};
// Create a new Class that inherits from this class
Class.extend = function(prop)...
Send file using POST from a Python script
...
From: https://requests.readthedocs.io/en/latest/user/quickstart/#post-a-multipart-encoded-file
Requests makes it very simple to upload Multipart-encoded files:
with open('report.xls', 'rb') as f:
r = requests.post('http://httpbin.org/post', files={'report.xls': ...
is_null($x) vs $x === null in PHP [duplicate]
...there is a time difference between using === and is_null(). Did some quick testing and got these results:
<?php
//checking with ===
$a = array();
$time = microtime(true);
for($i=0;$i<10000;$i++) {
if($a[$i] === null) {
//do nothing
}
}
echo 'Testing with === ', microtime(tru...
How to base64 encode image in linux bash / shell
...ntents of the file named 'DSC_0251.JPG', rather than the filename itself.
test="$(cat DSC_0251.JPG | base64)"
However, base64 can read from the file itself:
test=$( base64 DSC_0251.JPG )
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