大约有 41,300 项符合查询结果(耗时:0.0613秒) [XML]
How do I convert from int to String?
...2; //class java/lang/StringBuilder
5: dup
6: invokespecial #3; //Method java/lang/StringBuilder."<init>":()V
Append the empty string:
9: ldc #4; //String
11: invokevirtual #5; //Method java/lang/StringBuilder.append:
(Ljava/lang/String;)Ljava/lang/StringBuil...
Remove duplicate rows in MySQL
...
A really easy way to do this is to add a UNIQUE index on the 3 columns. When you write the ALTER statement, include the IGNORE keyword. Like so:
ALTER IGNORE TABLE jobs
ADD UNIQUE INDEX idx_name (site_id, title, company);
This will drop all the duplicate rows. As an added benefit...
Enabling HTTPS on express.js
...
In express.js (since version 3) you should use that syntax:
var fs = require('fs');
var http = require('http');
var https = require('https');
var privateKey = fs.readFileSync('sslcert/server.key', 'utf8');
var certificate = fs.readFileSync('sslcert/ser...
Node.js: Difference between req.query[] and req.params
...|
edited Mar 24 '17 at 16:33
answered Jan 19 '13 at 19:37
J...
How do I iterate through each element in an n-dimensional matrix in MATLAB?
...,idx);.
– knedlsepp
Jan 4 '15 at 1:23
add a comment
|
...
Using boolean values in C
... <stdbool.h>
Option 2
typedef enum { false, true } bool;
Option 3
typedef int bool;
enum { false, true };
Option 4
typedef int bool;
#define true 1
#define false 0
Explanation
Option 1 will work only if you use C99 and it's the "standard way" to do it. Choose this if possible.
Opt...
jQuery: checking if the value of a field is null (empty)
...
31
The value of a field can not be null, it's always a string value. this isn't entirely true. I've got a select containing no options. When I...
grepping using the “|” alternative operator
...
136
You need to escape the |. The following should do the job.
grep "gene\|exon" AT5G60410.gff
...
git command to move a folder inside another
...es were added.
– Bart
Nov 9 '11 at 13:18
Hmm, perhaps git uses some external utility to determine file sameness taht d...
How to list empty folders in linux
...
263
Try the following:
find . -type d -empty
...
