大约有 11,400 项符合查询结果（耗时：0.0318秒） [XML]
Is there an exponent operator in C#?
...er, the .NET Framework offers the Math.Pow method:
Returns a specified number raised to the specified power.
So your example would look like this:
float Result, Number1, Number2;
Number1 = 2;
Number2 = 2;
Result = Math.Pow(Number1, Number2);
...
JavaScript style for optional callbacks
I have some functions which occasionally (not always) will receive a callback and run it. Is checking if the callback is defined/function a good style or is there a better way?
...
How to pass optional arguments to a method in C++?
...Here is an example of passing mode as optional parameter
void myfunc(int blah, int mode = 0)
{
if (mode == 0)
do_something();
else
do_something_else();
}
you can call myfunc in both ways and both are valid
myfunc(10); // Mode will be set to default 0
myfunc(10, 1); ...
Convert bytes to a string
...
You need to decode the bytes object to produce a string:
>>> b"abcde"
b'abcde'
# utf-8 is used here because it is a very common encoding, but you
# need to use the encoding your data is actually in.
>>> b"abcde".decode("utf-8") ...
Converting a view to Bitmap without displaying it in Android?
...
there is a way to do this. you have to create a Bitmap and a Canvas and call view.draw(canvas);
here is the code:
public static Bitmap loadBitmapFromView(View v) {
Bitmap b = Bitmap.createBitmap( v.getLayoutParams().width, v.getLayoutParams().height, Bitmap.Config.AR...
How to remove the lines which appear on file B from another file A?
... (consisting of emails), one line for each mail. I also have another file B that contains another set of mails.
9 Answers...
Why is it OK to return a 'vector' from a function?
...this type of code several times. words is a local vector. How is it possible to return it from a function?
6 Answers
...
How do I merge a list of dicts into a single dict?
...for d in L:
... result.update(d)
...
>>> result
{'a':1,'c':1,'b':2,'d':2}
As a comprehension:
# Python >= 2.7
{k: v for d in L for k, v in d.items()}
# Python < 2.7
dict(pair for d in L for pair in d.items())
...
Convert string to integer type in Go?
...
peterSOpeterSO
125k2424 gold badges211211 silver badges214214 bronze badges
...
Assign same value to multiple variables at once?
How can I assign the same value for multiple variables in PHP at once ?
2 Answers
2
...