大约有 15,475 项符合查询结果（耗时：0.0164秒） [XML]
How to create user for a db in postgresql? [closed]
...
From CLI:
$ su - postgres
$ psql template1
template1=# CREATE USER tester WITH PASSWORD 'test_password';
template1=# GRANT ALL PRIVILEGES ON DATABASE "test_database" to tester;
template1=# \q
PHP (as tested on localhost, it works as expected):
$connString = 'port=5432 dbname=test_databa...
Testing for empty or nil-value string [duplicate]
I'm trying to set a variable conditionally in Ruby. I need to set it if the variable is nil or empty (0 length string). I've come up with the following:
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How do you UrlEncode without using System.Web?
... as an answer.
Couldn't find any good examples comparing them so:
string testString = "http://test# space 123/text?var=val&another=two";
Console.WriteLine("UrlEncode: " + System.Web.HttpUtility.UrlEncode(testString));
Console.WriteLine("EscapeUriString: " + Uri.EscapeUriString(testSt...
Escape angle brackets in a Windows command prompt
...etlocal disableDelayedExpansion
set "line=<html>"
cmd /v:on /c echo !test!|findstr .
Note that delayed expansion is OFF in the parent batch script.
But all hell breaks loose if delayed expansion is enabled in the parent script. The following does not work:
@echo off
setlocal enableDelayedE...
Bypass popup blocker on window.open when JQuery event.preventDefault() is set
... But if you can't, there you go.
Here's an example of code that fails the test because of the asynchronous call:
Live example | Live source (The live links no longer work because of changes to JSBin)
jQuery(function($) {
// This version doesn't work, because the window.open is
// not during t...
Batch files - number of command line arguments
...
Have tested this out to 2500 arguments as a function and used it to define arrays of same size. Dont ask me why exactly. Mostly just learning what batch is capable of.
– T3RR0R
Jan 4 at 12:56...
Try catch statements in C
...happened here\n");
} else {
// Normal code execution starts here
Test();
}
}
void Test() {
// Rough equivalent of `throw`
longjmp(s_jumpBuffer, 42);
}
This website has a nice tutorial on how to simulate exceptions with setjmp and longjmp
http://www.di.unipi.it/~nids/docs/longju...
MYSQL OR vs IN performance
... OR.
Do not believe people who give their "opinion", science is all about testing and evidence.
I ran a loop of 1000x the equivalent queries (for consistency, I used sql_no_cache):
IN: 2.34969592094s
OR: 5.83781504631s
Update:
(I don't have the source code for the original test, as it was 6 yea...
Using Mockito to mock classes with generic parameters
...his is fully acceptable since we are talking about a mock object in a unit test.
– Magnilex
Nov 26 '14 at 13:06
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