大约有 49,000 项符合查询结果（耗时：0.0958秒） [XML]
How do you list the active minor modes in emacs?
... (mapc (lambda (mode) (condition-case nil
(if (and (symbolp mode) (symbol-value mode))
(add-to-list 'active-modes mode))
(error nil) ))
minor-mode-list)
(message "Active modes are %s" active-mod...
uint8_t vs unsigned char
...ll be storing small numbers, rather than a character.
Also it looks nicer if you're using other typedefs such as uint16_t or int32_t.
share
|
improve this answer
|
follow
...
How do I negate a condition in PowerShell?
...
You almost had it with Not. It should be:
if (-Not (Test-Path C:\Code)) {
write "it doesn't exist!"
}
You can also use !: if (!(Test-Path C:\Code)){}
Just for fun, you could also use bitwise exclusive or, though it's not the most readable/understandable metho...
Create folder with batch but only if it doesn't already exist
...
You just use this: if not exist "C:\VTS\" mkdir C:\VTS it wll create a directory only if the folder does not exist.
Note that this existence test will return true only if VTS exists and is a directory. If it is not there, or is there as a fil...
What's the best way to detect a 'touch screen' device using JavaScript?
...uery plug-in that's for use on both desktop and mobile devices. I wondered if there is a way with JavaScript to detect if the device has touch screen capability. I'm using jquery-mobile.js to detect the touch screen events and it works on iOS, Android etc., but I'd also like to write conditional sta...
onActivityResult is not being called in Fragment
...
Also note that if you are using nested fragments, the child fragment should call getParentFragment().startActivityForResult so that the parent fragment will have its onActivityResult method called.
– Eric Brynsvold
...
Python creating a dictionary of lists
...ther oddly-named setdefault function says "Get the value with this key, or if that key isn't there, add this value and then return it."
As others have rightly pointed out, defaultdict is a better and more modern choice. setdefault is still useful in older versions of Python (prior to 2.5).
...
What does auto do in margin:0 auto?
...
When you have specified a width on the object that you have applied margin: 0 auto to, the object will sit centrally within it's parent container.
Specifying auto as the second parameter basically tells the browser to automatically determine ...
Difference between two DateTimes C#?
I need a function that can return the difference between the below two dates as 24.
6 Answers
...
Use JNI instead of JNA to call native code?
...
JNA does not support mapping of c++ classes, so if you're using c++ library you will need a jni wrapper
If you need a lot of memory copying. For example, you call one method which returns you a large byte buffer, you change something in it, then you need to call another me...