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Creating PHP class instance with a string
...ther cool stuff you can do in php are:
Variable variables:
$personCount = 123;
$varname = 'personCount';
echo $$varname; // echo's 123
And variable functions & methods.
$func = 'my_function';
$func('param1'); // calls my_function('param1');
$method = 'doStuff';
$object = new MyClass();
$obj...
NPM global install “cannot find module”
...NODE_PATH
My NODE_PATH was empty, and running npm install --global --verbose promised-io showed that it was installing into /opt/lib/node_modules/promised-io:
[root@uberneek ~]# npm install --global --verbose promised-io
npm info it worked if it ends with ok
npm verb cli [ '/opt/bin/node',
npm ve...
XMLHttpRequest cannot load file. Cross origin requests are only supported for HTTP
...ommand: ipconfig and hit Enter.
Look for: IPv4 Address . . . . . . . . 12.123.123.00
There are websites that will also display your IP address
If you don't have Python, download and install it.
Using the 'Command Prompt' you must go to the folder where the files are that you want to serve as a w...
Android Min SDK Version vs. Target SDK Version
...
The comment posted by the OP to the question (basically stating that the targetSDK doesn't affect the compiling of an app) is entirely wrong! Sorry to be blunt.
In short, here is the purpose to declaring a different targetSDK from the mi...
What is the best way to call a script from another script?
...
This is possible in Python 2 using
execfile("test2.py")
See the documentation for the handling of namespaces, if important in your case.
In Python 3, this is possible using (thanks to @fantastory)
exec(open("test2.py").read())
...
Who is listening on a given TCP port on Mac OS X?
...tening on the specified TCP port. How do I get the same information on Mac OS X?
17 Answers
...
What are the advantages of Sublime Text over Notepad++ and vice-versa? [closed]
..., C#, HTML, JS, CSS, etc.), copying & paste pieces of text and running macros on it, etc.
3 Answers
...
Fastest way to count exact number of rows in a very large table?
...nly speculate. Does the db maintenance process find out that there are 42,123,876 rows in table A and then create 42,123,876 empty rows in table B, and then loop through table A and update the rows in table B...? Or is it crazier than that? ;-)
– Tony Andrews
...
Using IPython notebooks under version control
...tion with git. It allows you to just add and commit (and diff) as usual: those operations will not alter your working tree, and at the same time (re)running a notebook will not alter your git history.
Although this can probably be adapted to other VCSs, I know it doesn't satisfy your requirements (...
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
$fp = fopen("log.txt", "a");
fwrite($fp, $str);
fclose($fp);
// 读文件
$fp = fopen("log.txt", "r");
while(!feof($fp)) {
$line = fgets($fp);
echo $line;
}
fclose($fp);
C#读写文件：
using System.IO;
private void ReadWriteFunc(string str)
{ ...