大约有 46,000 项符合查询结果（耗时：0.0535秒） [XML]
How do android screen coordinates work?
I am working with Android Animation and I have found the Android coordinate system to be quite confusing so I am here to ask this question about how coordinates work in Android. I am following this image for moving one view to another but it seems it's not working:
...
Tetris-ing an array
...n any order to reduce them to their common prefix. Since it is associative and commutative the order doesn't matter for the result.
This is the same as for other binary operations like for example addition or greatest common divisor.
...
Removing trailing newline character from fgets() input
I am trying to get some data from the user and send it to another function in gcc. The code is something like this.
13 Answ...
what is faster: in_array or isset? [closed]
...
in_array: 1.738441
This builds on Jason's benchmark by filling in some random values and occasionally finding a value that exists in the array. All random, so beware that times will fluctuate.
$a = array();
for ($i = 0; $i < 10000; ++$i) {
$v = rand(1, 1000000);
$a[$v] = $v;
}
echo "S...
How do I select elements of an array given condition?
...e elements in y corresponding to elements in x that are greater than 1 and less than 5.
6 Answers
...
Deleting an element from an array in PHP
...n use unset() or alternatively \array_splice().
Also if you have the value and don't know the key to delete the element you can use \array_search() to get the key.
unset()
Note that when you use unset() the array keys won't change/reindex. If you want to reindex the keys you can use \array_values() ...
Reduce left and right margins in matplotlib plot
...
If you have multiple subplots and want to save each of them, you can use this with fig.savefig() too. (plt.savefig() will not work in that case.)
– Abhranil Das
Apr 21 '13 at 12:07
...
How to easily resize/optimize an image size with iOS?
My application is downloading a set of image files from the network, and saving them to the local iPhone disk. Some of those images are pretty big in size (widths larger than 500 pixels, for instance). Since the iPhone doesn't even have a big enough display to show the image in its original size, I'...
What does glLoadIdentity() do in OpenGL?
I'm new to OpenGL and I'm a little overwhelmed with all of the random functions that I have in my code. They work and I know when to use them, but I don't know why I need them or what they actually do.
...
How to find index of list item in Swift?
...
As swift is in some regards more functional than object-oriented (and Arrays are structs, not objects), use the function "find" to operate on the array, which returns an optional value, so be prepared to handle a nil value:
let arr:Array = ["a","b","c"]
find(arr, "c")! // 2
fi...