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NSOperation vs Grand Central Dispatch
...ere I noticed overhead from using NSOperations, and I've seen this on both Mac and iOS.
Second, there's an elegance to block-based dispatch code that is hard to match when using NSOperations. It's so incredibly convenient to wrap a few lines of code in a block and dispatch it to be performed on a s...
How do I use vi keys in ipython under *nix?
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You can also interactively switch between Vi-mode and Emacs mode. According to the the readline docs to switch between them you are supposed to be able to use the M-C-j key combination but that only seems to allow me to switch to vi-mode - on my Mac (where ESC is used as the 'Met...
How to write to a file in Scala?
...ing, not to force everyone to specify it all the time. But if you're on a Mac and your files written by Java are gobbledygook because they aren't Mac OS Roman encoded, I'm not sure it's doing more good than harm. I think it's the platforms' fault that they haven't agreed on a charset. As an indiv...
Is it bad to have my virtualenv directory inside my git repository?
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If you, say pip install mysql-python, on a 64 bit machine, and then someone with a 32 bit machine tries to use it, it will not work. It uses a C module, like many Python modules do, to increase performance. I imagine Windows->Linux would also not work.
...
Match whitespace but not newlines
... both \r and \n in the pattern correctly handles all of Unix (LF), classic Mac OS (CR), and DOS-ish (CR LF) newline conventions.
No need to take my word for it:
#! /usr/bin/env perl
use strict;
use warnings;
use 5.005; # for qr//
my $ws_not_crlf = qr/[^\S\r\n]/;
for (' ', '\f', '\t', '\r', ...
Match linebreaks - \n or \r\n?
... \r?
Long story short, Linux uses \n for a new-line, Windows \r\n and old Macs \r. So there are multiple ways to write a newline. Your second tool (RegExr) does for example match on the single \r.
1) [\r\n]+ as Ilya suggested will work, but will also match multiple consecutive new-lines. (\r\n|\r|...
VC MFC工具栏(CToolBar)控件 - C/C++ - 清泛网 - 专注C/C++及内核技术
...函数第二个参数数组大小。lpButtons:一个TBBUTTON结构数组的地址
TBBUTON结构定义如下：
typedef struct _TBBUTTON
{
int iBitmap; // 按钮显示的图片索引，没有图像为NULL，
int idCommand; // 与此按钮相关联的命令标识符，当fsStyle具有TBSTYLE_SE...
How to find the nearest parent of a Git branch?
... think you can make it one line instead of 2, and possibly make it work on Mac as ack is not available on Mac (somebody suggested replacing ack with grep)
– nonopolarity
Apr 18 '14 at 17:19
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Xcode 4 - slow performance
...o time :)
Be aware that the ram disk will disappear when you restart your machine, so it could be a good idea to create a script or something that runs on startup. AND DON'T PLACE ANY DATA THERE THAT YOU WANT TO KEEP!!!
UPDATE 2013-03-12:
Read the comment from Francisco Garcia below!
With my new...
Why is early return slower than else?
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@mac, not quite. I'll add a bit about hash resolution (was going to squeeze it into the comment but it's more interesting than I thought).
– Duncan
Nov 28 '11 at 9:58
...