大约有 25,500 项符合查询结果（耗时：0.0358秒） [XML]
Postgis installation: type “geometry” does not exist
...
I had the same problem, but it was fixed by running following code
CREATE EXTENSION postgis;
In detail,
open pgAdmin
select (click) your database
click "SQL" icon on the bar
run "CREATE EXTENSION postgis;" code
...
What's the difference between a proxy server and a reverse proxy server? [closed]
...previous answers were accurate, but perhaps too terse.
I will try to add some examples.
First of all, the word "proxy" describes someone or something acting on behalf of someone else.
In the computer realm, we are talking about one server acting on the behalf of another computer.
For the purposes...
How to check permissions of a specific directory?
I know that using ls -l "directory/directory/filename" tells me the permissions of a file. How do I do the same on a directory?
...
Screenshot Apps for iPhone simulator [closed]
I was wondering if there are any good recommendations on apps that takes screenshots of the iPhone simulator. I've tried apps like iPhone screenshot cropper but I'm looking for something that will allow me to make larger images. For example large enough to put on a poster. Any suggestions?
...
Delete files older than 3 months old in a directory using .NET
...
Something like this outta do it.
using System.IO;
string[] files = Directory.GetFiles(dirName);
foreach (string file in files)
{
FileInfo fi = new FileInfo(file);
if (fi.LastAccessTime < DateTime.Now.AddMonths(...
Code signing certificate for open-source projects?
...ficate.) I want to do this so anyone can check that this build was made by me, not by someone else. I also want to create a secure website with a valid SSL certificate so visitors can create their own accounts in a secure way so they can contribute to this project.
...
How do I revert a Git repository to a previous commit?
...
This depends a lot on what you mean by "revert".
Temporarily switch to a different commit
If you want to temporarily go back to it, fool around, then come back to where you are, all you have to do is check out the desired commit:
# This will detach your HE...
How to disable UITextField editing but still accept touch?
...
Using the textfield delegate, there's a method
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
Return NO from this, and any attempt by the user to edit the text will be rejected.
That ...
Ordering by specific field value first
...tion.
If you want complete sorting for all possible values:
SELECT id, name, priority
FROM mytable
ORDER BY FIELD(name, "core", "board", "other")
If you only care that "core" is first and the other values don't matter:
SELECT id, name, priority
FROM mytable
ORDER BY FIELD(name, "core") DESC
I...
Haskell: Where vs. Let
...re vs. Let but I am having trouble discerning when to use each. Could someone please provide some context or perhaps a few examples that demonstrate when to use one over the other?
...