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Java how to replace 2 or more spaces with single space in string and delete leading and trailing spa
...aceAll("^ +| +$|( )+", "$1")
);
}
There are 3 alternates:
^_+ : any sequence of spaces at the beginning of the string
Match and replace with $1, which captures the empty string
_+$ : any sequence of spaces at the end of the string
Match and replace with $1, which captures the em...
append new row to old csv file python
...
I tried fp = open(csv_filepathwithname, 'wa') writer = csv.writer(fp) somelist = [ 3,56,3,6,56] writer.writerow((somelist)) but only the last row get append in the file.
– laspal
Mar 2 '10 at 14...
Get last element of Stream/List in a one-liner
...o you by the way know if it is possibly to omit a name (perhaps by using a _ or similar) in cases where you do not need a parameter? So would be: .reduce((_, current) -> current) if only that aws valid syntax.
– skiwi
Jan 29 '14 at 20:18
...
php 获取操作系统、浏览器版本信息（持续更新） - 更多技术 - 清泛网 - 专...
... * 获取os信息
*
* @return os
*/
function getOS()
{
$agent = $_SERVER['HTTP_USER_AGENT'];
$os = false;
if (eregi('win', $agent) && strpos($agent, '95')){
$os = 'Windows 95';
}
else if (eregi('win 9x', $agent) && strpos($agent, '4.90')){
$os = 'Windows ME';
}
else if (...
“Bitmap too large to be uploaded into a texture”
...
All rendering is based on OpenGL, so no you can't go over this limit (GL_MAX_TEXTURE_SIZE depends on the device, but the minimum is 2048x2048, so any image lower than 2048x2048 will fit).
With such big images, if you want to zoom in out, and in a mobile, you should setup a system similar to what...
What characters are allowed in an email address?
... A to Z and a to z;
digits 0 to 9;
special characters !#$%&'*+-/=?^_`{|}~;
dot ., provided that it is not the first or last character unless quoted, and provided also that it does not appear consecutively unless quoted (e.g. John..Doe@example.com is not allowed but "John..Doe"@example.com ...
SQLite add Primary Key
...OB,
PRIMARY KEY (field2, field1)
);
Reference: http://www.sqlite.org/lang_createtable.html
This answer does not address table alteration.
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fol...
What is the difference between native code, machine code and assembly code?
...on to this it does go directly to machine code.
– old_timer
Aug 12 '10 at 16:49
This feels like nitpicking, but not al...
How does libuv compare to Boost/ASIO?
...s. For this reason, care needs to be taken when using the default loop (uv_default_loop()), rather than creating a new loop (uv_loop_new()), as another component may be running the default loop.
Boost.Asio does not have the notion of a default loop; all io_service are their own loops that allow for...
How JavaScript closures are garbage collected
...ither you set some=null when you don't need it anymore, or you set window.f_ = null; and it will be gone.
Update
I have tried it in Chrome 30, FF25, Opera 12 and IE10 on Windows.
The standard doesn't say anything about garbage collection, but gives some clues of what should happen.
Section 13...