大约有 37,000 项符合查询结果（耗时：0.0587秒） [XML]
How can I count the number of matches for a regex?
... following. (Starting from Java 9, there is a nicer solution)
int count = 0;
while (matcher.find())
count++;
Btw, matcher.groupCount() is something completely different.
Complete example:
import java.util.regex.*;
class Test {
public static void main(String[] args) {
String hel...
How do I use arrays in C++?
...
305
Arrays on the type level
An array type is denoted as T[n] where T is the element type and n is...
How to get execution time in rails console?
...
|
edited Jul 20 '19 at 4:28
Jeremy Baker
3,04833 gold badges2121 silver badges2525 bronze badges
...
Controlling maven final name of jar artifact
...
303
You set the finalName property in the plugin configuration section:
<plugin>
<gro...
Python using enumerate inside list comprehension
...list)]
Either way, the result that gets returned is as expected:
> [(0, 'a'), (1, 'b'), (2, 'c'), (3, 'd')]
share
|
improve this answer
|
follow
|
...
How do I read / convert an InputStream into a String in Java?
...|
edited May 21 '18 at 13:09
Marko Zajc
14811 silver badge1313 bronze badges
answered Nov 21 '08 at 16:5...
What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?
...
300
Your first port of call should be the documentation which explains it reasonably clearly:
T...
Python, Matplotlib, subplot: How to set the axis range?
How can I set the y axis range of the second subplot to e.g. [0,1000] ?
The FFT plot of my data (a column in a text file) results in a (inf.?) spike so that the actual data is not visible.
...
Accessing localhost:port from Android emulator
...
420
You can access your host machine with the IP address "10.0.2.2".
This has been designed in thi...
Check if an array is empty or exists
...
if (typeof image_array !== 'undefined' && image_array.length > 0) {
// the array is defined and has at least one element
}
Your problem may be happening due to a mix of implicit global variables and variable hoisting. Make sure you use var whenever declaring a variable:
<?php e...