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Hidden Features of Xcode 4
...nu as you type your code. For example, among many others, I have a snippet set up so that typing "svk" will expand to setValue:<#value#> forKey:<#key#>. This can save a lot of typing and/or fishing around in the autocompletion menu for the methods and other code expressions you use the m...
Map.clear() vs new Map : Which one will be better? [duplicate]
...stance yet another overhead. So go for Map.clear(). You will be wise to preset the size of the Map while instantiating it.
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Print newline in PHP in single quotes
I try to use single quotes as much as possible and I've noticed that I can't use \n in single quotes. I know I can just enter a newline literally by pressing return, but that screws up the indentation of my code.
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浅析为什么char类型的范围是 -128~+127 - C/C++ - 清泛网 - 专注C/C++及内核技术
浅析为什么char类型的范围是 -128~+127在C语言中， signed char 类型的范围为-128~127,每本教科书上也这么写，但是没有哪一本书上（包括老师）也不会给你为什么是-128~127，这...在C语言中， signed char 类型的范围为-128~127,每本教科书上...
When are you truly forced to use UUID as part of the design?
... random bits) to make the likeyhood of a collision between this very small set of UUIDs nearly impossible.
strictly speaking, UUIDs only need to be unique among the set of other UUIDs that they might be compared against. If you're generating a UUID to use as a database key, it doesn't matter if som...
Parsing XML with namespace in Python via 'ElementTree'
I have the following XML which I want to parse using Python's ElementTree :
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How to use the toString method in Java?
...ul toString() of objects than it is to inspect their members.
There is no set requirement for what a toString() method should do. By convention, most often it will tell you the name of the class and the value of pertinent data members. More often than not, toString() methods are auto-generated in I...
How to access the correct `this` inside a callback?
...tage that you can access the this value of the callback itself.
Explicitly set this of the callback - part 1
It might look like you have no control over the value of this because its value is set automatically, but that is actually not the case.
Every function has the method .bind [docs], which retu...
Separate REST JSON API server and client? [closed]
...ent called 'Spar' (Single Page App Rocketship) which is effectively the asset pipeline from Rails tuned for single page app development. We'll be open-sourcing within the next couple of weeks on our github page, along with a blog post explaining how to use it and overall architecture in greater det...
Why use 'git rm' to remove a file instead of 'rm'?
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Good answer. I was able to use git reset --hard and then do a checkout of master to get out of detached head state because I knew I didn't have any uncommitted changes. If you haven't committed your changes you may want to do a git stash, but I'm relatively new ...