大约有 44,000 项符合查询结果（耗时：0.0897秒） [XML]
Why does scanf() need “%lf” for doubles, when printf() is okay with just “%f”?
...
Since С99 the matching between format specifiers and floating-point argument types in C is consistent between printf and scanf. It is
%f for float
%lf for double
%Lf for long double
It just so happens that when arguments of type float are passed as variadic parameters,...
Type of conditional expression cannot be determined because there is no implicit conversion between
... conditional expression b ? x : y, there are three possibilities, either x and y both have a type and certain good conditions are met, only one of x and y has a type and certain good conditions are met, or a compile-time error occurs. Here, "certain good conditions" means certain conversions are pos...
Android: alternate layout xml for landscape mode
How can I have one layout for landscape and one for portrait? I want to assume extra width and conserve vertical space when the user rotates the phone over sideways.
...
Python function global variables?
... value of the result of func_A, or (3) to a local variable x with no value and (in the eyes of the compiler) no relation to "some value" or the x in func_A?
– Akshat Shekhar
May 14 '12 at 18:00
...
Which is faster/best? SELECT * or SELECT column1, colum2, column3, etc
...eard that SELECT * is generally bad practice to use when writing SQL commands because it is more efficient to SELECT columns you specifically need.
...
WPF Button with Image
...
This is a pretty bad solution as the text and image won't be grayed out when you disable the button.
– Num Lock
May 24 '17 at 9:22
5
...
Argparse: Required argument 'y' if 'x' is present
...ts of options.
The simplest way to deal with this would be:
if args.prox and (args.lport is None or args.rport is None):
parser.error("--prox requires --lport and --rport.")
share
|
improve t...
Finding local maxima/minima with Numpy in a 1D numpy array
...mum" varies vastly from use case to use case, so it's hard to provide a "standard" function for this purpose. Smoothing helps to take into account more than just the nearest neighbor. Using a different integer instead of 1, say 3, would be strange as it would only consider the third-next element i...
Is there a difference between foreach and map?
...n a particular language, but is there a difference between a map operation and a foreach operation? Or are they simply different names for the same thing?
...
SCOPE_IDENTITY() for GUIDs?
...key mentions, you should be using NewSequentialID() to generate your GUIDs and not NewID().
– Rob Garrison
Oct 2 '09 at 16:32
1
...