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Possibility of duplicate Mongo ObjectId's being generated in two different collections?
...ing in Mongo itself, it is possible to have duplicate _id's generated with PHP in Mongo.
The use-case where this has happened with regularity for me is when I'm looping through a dataset and attempting to inject the data into a collection.
The array that holds the injection data must be explicitl...
Handle Guzzle exception and get HTTP body
...ttp\Psr7\Response
* (find it in ./vendor/guzzlehttp/psr7/src/Response.php) with all
* its own and its 'Message' trait's methods. See more explanations below.
*
* So you can have: HTTP status code, message, headers and body.
* Just check the exception object has the response ...
How to use sed to remove the last n lines of a file
...head, but is not standard. Indeed, the standard for head states: The application shall ensure that the number option-argument is a positive decimal integer.
– William Pursell
Nov 14 '12 at 15:51
...
Is Tomcat running?
Interested to know how people usually check to see if Tomcat is running on a Unix environment.
17 Answers
...
Grep not as a regular expression
I need to search for a PHP variable $someVar . However, Grep thinks that I am trying to run a regex and is complaining:
6 ...
Java: method to get position of a match in a String?
... while-loop, cool:
$ javac MatchTest.java
$ java MatchTest
1
16
31
46
$ cat MatchTest.java
import java.util.*;
import java.io.*;
public class MatchTest {
public static void main(String[] args){
String match = "hello";
String text = "hello0123456789hello0123456789hello1234567...
Launching Spring application Address already in use
I have this error launching my spring application:
25 Answers
25
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Row count with PDO
... statements around. What is the best way to get the row count using PDO in PHP? Before using PDO, I just simply used mysql_num_rows .
...
How to write character & in android strings.xml
...ere is a nice reference page: http://jrgraphix.net/research/unicode_blocks.php?block=0
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浅谈Heatmap：网页热点图生成原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...了一些随机生成的数据，以Imagick为例，代码如下：
<?php
$coordinates = array();
for ($i = 0; $i < 1000; $i++) {
$coordinates[] = array(rand($i, 1000), rand($i, 1000));
}
$max_repeat = max(
array_count_values(
array_map(function($v) { return "{$v[0]}x...