大约有 11,287 项符合查询结果（耗时：0.0211秒） [XML]
Best way to merge two maps and sum the values of same key?
I want to merge them, and sum the values of same keys. So the result will be:
15 Answers
...
Which is fastest? SELECT SQL_CALC_FOUND_ROWS FROM `table`, or SELECT COUNT(*)
When you limit the number of rows to be returned by a SQL query, usually used in paging, there are two methods to determine the total number of records:
...
How to automatically convert strongly typed enum into int?
The a::LOCAL_A is what the strongly typed enum is trying to achieve, but there is a small difference : normal enums can be converted into integer type, while strongly typed enums can not do it without a cast.
...
How to split a large text file into smaller files with equal number of lines?
I've got a large (by number of lines) plain text file that I'd like to split into smaller files, also by number of lines. So if my file has around 2M lines, I'd like to split it up into 10 files that contain 200k lines, or 100 files that contain 20k lines (plus one file with the remainder; being ev...
Java: splitting a comma-separated string but ignoring commas in quotes
...
Try:
public class Main {
public static void main(String[] args) {
String line = "foo,bar,c;qual=\"baz,blurb\",d;junk=\"quux,syzygy\"";
String[] tokens = line.split(",(?=(?:[^\"]*\"[^\"]*\")*[^\"]*$)", -1);
...
Returning value that was passed into a method
...
You can use a lambda with an input parameter, like so:
.Returns((string myval) => { return myval; });
Or slightly more readable:
.Returns<string>(x => x);
...
What's the meaning of “=>” (an arrow formed from equals & greater than) in JavaScript?
I know that the >= operator means more than or equal to, but I've seen => in some source code. What's the meaning of that operator?
...
A regular expression to exclude a word/string
...
Reverend Homer
522 bronze badges
answered Jan 16 '10 at 21:21
SethSeth
38.3k99 gold badges7979 si...
How to empty (clear) the logcat buffer in Android [duplicate]
How can I empty (clear) the logcat buffer in Android?
4 Answers
4
...
How can I trim all strings in an Array? [duplicate]
...
zerkmszerkms
222k5454 gold badges390390 silver badges478478 bronze badges
...