大约有 6,300 项符合查询结果（耗时：0.0125秒） [XML]
What is the point of function pointers?
I have trouble seeing the utility of function pointers. I guess it may be useful in some cases (they exist, after all), but I can't think of a case where it's better or unavoidable to use a function pointer.
...
How to bind function arguments without binding this?
In Javascript, how can I bind arguments to a function without binding the this parameter?
15 Answers
...
How can I force division to be floating point? Division keeps rounding down to 0?
I have two integer values a and b , but I need their ratio in floating point. I know that a < b and I want to calculate a / b , so if I use integer division I'll always get 0 with a remainder of a .
...
plot a circle with pyplot
surprisingly I didn't find a straight-forward description on how to draw a circle with matplotlib.pyplot (please no pylab) taking as input center (x,y) and radius r. I tried some variants of this:
...
Do Java arrays have a maximum size?
...
Haven't seen the right answer, even though it's very easy to test.
In a recent HotSpot VM, the correct answer is Integer.MAX_VALUE - 5. Once you go beyond that:
public class Foo {
public static void main(String[] args) {
Object[] array...
ipython: print complete history (not just current session)
...
In ipython enter:
%history -g
It does not print time codes but it does print session/line number.
share
|
improve this answer
|
...
Separating class code into a header and cpp file
...r and cpp file. For example, how would I separate the code for the following class?
8 Answers
...
How to concatenate strings of a string field in a PostgreSQL 'group by' query?
I am looking for a way to concatenate the strings of a field within a group by query. So for example, I have a table:
14 An...
Does JavaScript have a built in stringbuilder class?
...make sure you chose an implementation, which uses array joins. Concatenating strings with the + or += operator are extremely slow on IE. This is especially true for IE6. On modern browsers += is usually just as fast as array joins.
When I have to do lots of string concatenations I usually fill an ...
jQuery removing '-' character from string
I have a string "-123445". Is it possible to remove the '-' character from the string?
3 Answers
...