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What really happens in a try { return x; } finally { x = null; } statement?
I saw this tip in another question and was wondering if someone could explain to me how on earth this works?
5 Answers
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How can jQuery deferred be used?
...he best use case I can think of is in caching AJAX responses. Here's a modified example from Rebecca Murphey's intro post on the topic:
var cache = {};
function getData( val ){
// return either the cached value or jqXHR object wrapped Promise
return $.when(
cache[ val ] ||
...
How to implement the Android ActionBar back button?
...ress the back button. This should be done in the AndroidManifest.xml too.
Now you can enable the back button in the onCreate method of your "child" activity.
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getActionBar().setDisplayHomeAsUp...
Is “else if” a single keyword?
...
They are not a single keyword if we go to the draft C++ standard section 2.12 Keywords table 4 lists both if and else separately and there is no else if keyword. We can find a more accessible list of C++ keywords by going to cppreferences section on keyw...
整合phpcms v9和discuz X3.2实现同步登陆、退出免激活 - 更多技术 - 清泛网...
...修改 template\default\member\login.htm 第 36 行，删除
onsubmit="{if $this->setting['pwdsafety']}pwmd5('password3_$loginhash');{/if}pwdclear = 1;ajaxpost('loginform_$loginhash', 'returnmessage_$loginhash', 'returnmessage_$loginhash', 'onerror');return false;"
2、修改 template\default\me...
Django database query: How to get object by id?
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If you want to get an object, using get() is more straightforward:
obj = Class.objects.get(pk=this_object_id)
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How do I calculate square root in Python?
...tance, x(0) in the second.
So it's not wrong, it's the right answer to a different question.
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How should I call 3 functions in order to execute them one after the other?
If I need call this functions one after other,
11 Answers
11
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Objective-C declared @property attributes (nonatomic, copy, strong, weak)
...tching of data)
Copy
copy is required when the object is mutable. Use this if you need the value of the object as it is at this moment, and you don't want that value to reflect any changes made by other owners of the object. You will need to release the object when you are finished with it because y...
Set the value of a variable with the result of a command in a Windows batch file
...t foobar=%%a
But, I instead suggest using Cygwin on your Windows system if you are used to Unix-type scripting.
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