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Why can't yield return appear inside a try block with a catch?
...e already encountered:
Attributes not being able to be generic
Inability for X to derive from X.Y (a nested class in X)
Iterator blocks using public fields in the generated classes
In each of these cases it would be possible to gain a little bit more freedom, at the cost of extra complexity in t...
Create unique constraint with null columns
...mplementing the desired constraint.
Possible drawbacks: you cannot have a foreign key referencing (user_id, menu_id, recipe_id), you cannot base CLUSTER on a partial index, and queries without a matching WHERE condition cannot use the partial index. (It seems unlikely you'd want a FK reference thre...
Split array into chunks
... method can extract a slice from the beginning, middle, or end of an array for whatever purposes you require, without changing the original array.
var i,j,temparray,chunk = 10;
for (i=0,j=array.length; i<j; i+=chunk) {
temparray = array.slice(i,i+chunk);
// do whatever
}
...
Git cherry pick vs rebase
...on lies in original intent to create both tools:
git rebase's task is to forward-port a series of changes a developer has in their private repository, created against version X of some upstream branch, to version Y of that same branch (Y > X). This effectively changes the base of that series o...
What is stdClass in PHP?
...ython (Edit: but not actually used as universal base class; thanks @Ciaran for pointing this out).
It is useful for anonymous objects, dynamic properties, etc.
An easy way to consider the StdClass is as an alternative to associative array. See this example below that shows how json_decode() allow...
Useful GCC flags for C
...td=XXX , what other really useful, but less known compiler flags are there for use in C?
24 Answers
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Interface defining a constructor signature?
...rface and maybe cut down on the amount of refactoring needed in the future for similar situations. This concept has already been hinted at in some of the comments but I thought it would be worth showing how to actually do it.
So you have your main interface that looks like this so far:
public int...
Convert object string to JSON
... eval will still do bad things in this case if the string is constructed, for example, like this: var str = "(function() {console.log(\"bad\")})()";
– Rondo
Jan 31 '15 at 1:40
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记录一些Mac OS X技巧 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.dynamic_pager.plist
禁用以后，磁盘上还保留着这些交换文件，它们已经没用了，也可以删掉：
sudo rm /private/var/vm/swapfile*
如果要重新启用虚拟内存的话，可以执行这条命令：
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In a Git repository, how to properly rename a directory?
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But why GIT doesnt have a proper support for name change for a package/directory? Why do I even need to create a separate folder. When i change a name of the package shouldnt it take it as a difference and take care of it at the time of commit & push?
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