大约有 42,000 项符合查询结果（耗时：0.0442秒） [XML]
Are global variables in PHP considered bad practice? If so, why?
...ly have a variable that contains the system configuration, and when I nead to access this variable in a function, I do global $var; .
...
right click context menu for datagridview
I have a datagridview in a .NET winform app. I would like to rightclick on a row and have a menu pop up. Then i would like to select things such as copy, validate, etc
...
Traits vs. interfaces
I've been trying to study up on PHP lately, and I find myself getting hung up on traits. I understand the concept of horizontal code reuse and not wanting to necessarily inherit from an abstract class. What I don't understand is: What is the crucial difference between using traits versus interfaces?...
How can I auto-elevate my batch file, so that it requests from UAC administrator rights if required?
I want my batch file to only run elevated. If not elevated, provide an option for the user to relaunch batch as elevated.
1...
Namespace + functions versus static methods on a class
Let's say I have, or am going to write, a set of related functions. Let's say they're math-related. Organizationally, should I:
...
Alternatives to dispatch_get_current_queue() for completion blocks in iOS 6?
...main queue, or some other queue with odd properties.
My favorite approach to this is to say "the completion block runs on an implementation defined queue with these properties: x, y, z", and let the block dispatch to a particular queue if the caller wants more control than that. A typical set of pr...
Microsoft.WebApplication.targets was not found, on the build server. What's your solution?
Trying to build my project on the build server gives me the following error:
21 Answers
...
How to enter in a Docker container already running with a new TTY
...ntainer that is running the Apache service in the foreground. I would like to be able to access the container from another shell in order to "poke around" inside it and examine the files. At the moment, if I attach to the container, I am left looking at the Apache daemon and cannot run any commands....
How to Execute a Python File in Notepad ++?
...
First option: (Easiest, recommended)
Open Notepad++. On the menu go to: Run -> Run.. (F5). Type in:
C:\Python26\python.exe "$(FULL_CURRENT_PATH)"
Now, instead of pressing run, press save to create a shortcut for it.
Notes
If you have Python 3.1: type in Python31 instead of Python26
A...
performSelector may cause a leak because its selector is unknown
.... It's very rare that this warning should simply be ignored, and it's easy to work around. Here's how:
if (!_controller) { return; }
SEL selector = NSSelectorFromString(@"someMethod");
IMP imp = [_controller methodForSelector:selector];
void (*func)(id, SEL) = (void *)imp;
func(_controller, selecto...