大约有 44,947 项符合查询结果（耗时：0.0520秒） [XML]
What is the difference between IQueryable and IEnumerable?
...;T> extends the IEnumerable<T> interface, so anything you can do with a "plain" IEnumerable<T>, you can also do with an IQueryable<T>.
IEnumerable<T> just has a GetEnumerator() method that returns an Enumerator<T> for which you can call its MoveNext() method to ite...
How can I check if a Perl array contains a particular value?
... to figure out a way of checking for the existence of a value in an array without iterating through the array.
12 Answers
...
Xcode 4.2 debug doesn't symbolicate stack call
I have a problem with Xcode 4.2 debugging in an iOS 5 simulator/device. The following code crashes, as expected:
9 Answers
...
How can I set NODE_ENV=production on Windows?
In Ubuntu it's quite simple; I can run the application using:
18 Answers
18
...
How do you make an array of structs in C?
...
#include<stdio.h>
#define n 3
struct body
{
double p[3];//position
double v[3];//velocity
double a[3];//acceleration
double radius;
double mass;
};
struct body bodies[n];
int main()
{
int a, b;
for(a = 0; a < n; a++)
{
for(b = 0; b < 3;...
Why is Github asking for username/password when following the instructions on screen and pushing a n
I'm the owner of an organization on github and just created a repo and tried pushing but I'm running into an issue where it's asking me for my username even though I can SSH just fine:
...
Circle line-segment collision detection algorithm?
I have a line from A to B and a circle positioned at C with the radius R.
27 Answers
...
Difference between wait() and sleep()
What is the difference between a wait() and sleep() in Threads?
33 Answers
33
...
Controlling the screenshot in the iOS 7 multitasking switcher
I've been trying to find some information regarding the new multitasking switcher in iOS 7 and especially the screenshot that the OS takes when the app is going into hibernation.
...
ASP MVC in IIS 7 results in: HTTP Error 403.14 - Forbidden
...e above mentioned error message whenever I try to type the URL of the web site. (Note: development machine: Vista Home Premium, IIS7)
...