大约有 19,602 项符合查询结果（耗时：0.0389秒） [XML]
Is Java really slow?
...ther than explicit memory allocation. Plus bad library decisions.
Streams-based I/O is slow due to the (IMO, poor choice) to require synchronization on each stream access. NIO fixed this, but it is a pain to use. One can work around this by doing read/write to an array, instead of an element at a t...
Why does NULL = NULL evaluate to false in SQL server
...ons on this subject on Stackoverflow and in other forum to make sure);
SQL-based DBMSes often do not respect even 3VL, they give wrong answers sometimes (as, the original poster assert, SQL Server do in this case).
So I reiterate: SQL does not any good forcing one to interpret the reflexive proper...
how to check if object already exists in a list
...
Simply use Contains method. Note that it works based on the equality function Equals
bool alreadyExist = list.Contains(item);
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Android Studio: how to remove/update the “Created by” comment added to all new classes?
....g.
/**
* TODO: Add a class header comment!
*/
These instructions are based on Android Studio v0.3.7. and also tested on v1.2.1.1
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How to remove all the occurrences of a char in c++ string
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Based on other answers, here goes one more example where I removed all special chars in a given string:
#include <iostream>
#include <string>
#include <algorithm>
std::string chars(".,?!.:;_,!'\"-");
int ...
Prevent multiple instances of a given app in .NET?
...
Hanselman has a post on using the WinFormsApplicationBase class from the Microsoft.VisualBasic assembly to do this.
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Func delegate with no return type
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FYI, the next version of the base class library will include Func and Action types that support more than four formal parameters. I don't recall exactly how big they get.
– Eric Lippert
May 27 '09 at 20:08
...
Remove ':hover' CSS behavior from element
...u can just use the original selector to apply new CSS rule to that element based on some criterion:
$(".test").hover(
if(some evaluation) {
$(this).css('border':0);
}
);
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Converting List to List
...ts class
import com.google.common.collect.Lists;
import com.google.common.base.Functions
List<Integer> integers = Arrays.asList(1, 2, 3, 4);
List<String> strings = Lists.transform(integers, Functions.toStringFunction());
The List returned by transform is a view on the backing list -...
How to get scrollbar position with Javascript?
...evenues.
Deciding whether or not to perform tasks or animation processes based on whether or not the user will see the result.
Implementing intersection detection in the past involved event
handlers and loops calling methods like
Element.getBoundingClientRect() to build up the needed i...