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What are CN, OU, DC in an LDAP search?
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Which is more efficient, a for-each loop, or an iterator?
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the implementation of the iterator has to do at least 2 fields lookup in order to make hasNext() call figure the value: #1 get current count and #2 get total count
inside the body loop, there is another invokeInterface virtual call iter.next(so: go through all the classes and do method table looku...
What really happens in a try { return x; } finally { x = null; } statement?
... statement is executed, but the return value isn't affected. The execution order is:
Code before return statement is executed
Expression in return statement is evaluated
finally block is executed
Result evaluated in step 2 is returned
Here's a short program to demonstrate:
using System;
class ...
How to re import an updated package while in Python Interpreter? [duplicate]
...low. Where previously they might have needed to restart the application in order to put changed code into effect, those changes can be applied immediately.
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Unsubscribe anonymous method in C#
...ad of keeping a reference to any delegate you can instrument your class in order to give the event's invocation list back to the caller. Basically you can write something like this (assuming that MyEvent is declared inside MyClass):
public class MyClass
{
public event EventHandler MyEvent;
pu...
App Inventor 2 拓展参考文档 · App Inventor 2 中文网
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【数据库】LeanDB 数据库扩展
【数据库】MySQL + php后端数据库
【数据库】MongoDB + php后端数据库
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Limit results in jQuery UI Autocomplete
...ore efficient to limit directly the mysql result:
select [...] from [...] order by [...] limit 0,10
where 10 is the max numbers of rows you want
Converting a JS object to an array using jQuery
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@KarelBílek Is iteration order for a JS object ever guaranteed? 'An object is a member of the type Object. It is an unordered collection of properties each of which contains a primitive value, object, or function.'
– Meshaal
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Copy file or directories recursively in Python
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What is the difference between square brackets and parentheses in a regex?
...uestion uses keyword var in code, this probably is JavaScript). The use of php which runs on PCRE for preg matching will optimize away the lack of backtracking, however we're not in PHP either, so using classes [] instead of alternations | gives performance bonus as the match does not backtrack, and...