大约有 40,000 项符合查询结果（耗时：0.0512秒） [XML]
Performance surprise with “as” and nullable types
...ypes. The JIT compiler generates a call to a CLR helper function named JIT_Unbox_Nullable to get the job done. This is a general purpose function for any value type, lots of code there to check types. And the value is copied. Hard to estimate the cost since this code is locked up inside mscorwks...
What Makes a Good Unit Test? [closed]
... of Writing Tests:
1. Use long, descriptive test method names.
- Map_DefaultConstructorShouldCreateEmptyGisMap()
- ShouldAlwaysDelegateXMLCorrectlyToTheCustomHandlers()
- Dog_Object_Should_Eat_Homework_Object_When_Hungry()
2. Write your tests in an Arrange/Act/Assert style.
While th...
How to do scanf for single char in C [duplicate]
...mat. For example, if you input abc for an int such as: scanf("%d", &int_var); then abc will have to read and discarded. Consider:
#include <stdio.h>
int main(void)
{
int i;
while(1) {
if (scanf("%d", &i) != 1) { /* Input "abc" */
printf("Invalid input. Tr...
Invalid argument supplied for foreach()
...s to be the most clean - not sure if it's the most efficient, mind!
if (is_array($values) || is_object($values))
{
foreach ($values as $value)
{
...
}
}
The reason for my preference is it doesn't allocate an empty array when you've got nothing to begin with anyway.
...
How to list all tags along with the full message in git?
...ould be helpful here. Am I missing something?
– still_dreaming_1
Sep 23 '14 at 15:03
2
...
Best practice for localization and globalization of strings and labels [closed]
...and a get method (in some ways also defining an smaller function name like _) for retrieving/converting the key to the value. In my explaining the key means that string you want to translate and the value means translated string.
Then, you just need a JSON document to store key's and value's.
For e...
A Regex that will never be matched by anything
...e of $a. It's Perl equivalent $(?:a) is also very slow perl -Mre=debug -e'$_=a x 50; /$(?:a)/'.
– Brad Gilbert
Apr 6 '13 at 14:56
...
How to download an entire directory and subdirectories using wget?
...ader: wget -r -l1 --no-parent http://www.stanford.edu/~boyd/cvxbook/cvxbook_additional_exercises/ was the answer for me. Thanks your answer.
– isomorphismes
Jun 21 '14 at 17:05
2
...
if checkbox is checked, do this
...checked
here is my algorithm...
create a global variable lets say var check_holder
check_holder has 3 states
undefined state
0 state
1 state
If the checkbox is clicked,
$(document).on("click","#check",function(){
if(typeof(check_holder)=="undefined"){
//this means that it is th...
Strange out of memory issue while loading an image to a Bitmap object
...ather than 12MB for the full image (assuming a bitmap configuration of ARGB_8888). Here’s a method to calculate a sample size value that is a power of two based on a target width and height:
public static int calculateInSampleSize(
BitmapFactory.Options options, int reqWidth, int reqHeigh...