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postgres: upgrade a user to be a superuser?
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SELECT rolname, rolsuper FROM pg_roles; to @masterweily
– caulfield
May 30 '13 at 11:44
6
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How to delete multiple files at once in Bash on Linux?
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Just use multiline selection in sublime to combine all of the files into a single line and add a space between each file name and then add rm at the beginning of the list. This is mostly useful when there isn't a pattern in the filenames you wa...
ModelState.IsValid == false, why?
...r errors = ModelState
.Where(x => x.Value.Errors.Count > 0)
.Select(x => new { x.Key, x.Value.Errors })
.ToArray();
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DateTime format to SQL format using C#
...ther seldom used format, which is a bit weird but works for all versions:
select { d '2013-10-01' }
will return the first of october 2013.
select { ts '2013-10-01 13:45:01' }
will return october 1st, 1:45:01 PM
I strongly advice to use parameters and never format your own SQL code by pasting...
Delete files older than 3 months old in a directory using .NET
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Here's a 1-liner lambda:
Directory.GetFiles(dirName)
.Select(f => new FileInfo(f))
.Where(f => f.LastAccessTime < DateTime.Now.AddMonths(-3))
.ToList()
.ForEach(f => f.Delete());
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How to install Google Play Services in a Genymotion VM (with no drag and drop support)?
...ges provided by OpenGapps.
I tried and this worked:
Visit opengapps.org
Select x86 as platform
Choose the Android version corresponding to your virtual device
Select nano as variant
Download the zip file
Drag & Drop the zip installer in new Genymotion virtual device (2.7.2 and above only)
Fol...
The project file has been moved renamed or is not on your computer
... i tried to open the .vbproj file and this is what i get. "The selected file cannot be opened as a solution or project. Please select a solution file or a project file" also please put how to recreate the .sln file. I am new to this. thanks
– sineas
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Add spaces before Capital Letters
... line with linq:
var val = "ThisIsAStringToTest";
val = string.Concat(val.Select(x => Char.IsUpper(x) ? " " + x : x.ToString())).TrimStart(' ');
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Exception thrown inside catch block - will it be caught again?
...lause of the try statement, then the first (leftmost) such catch clause is selected. The value V is assigned to the parameter of the selected catch clause, and the Block of that catch clause is executed. If that block completes normally, then the try statement completes normally; if that block compl...
How to detect unused methods and #import in Objective-C
...pecific compiler warnings that can warn you of some types of unused code. (Select the project in the source list and File > Get Info, then select the Build tab.) Here are a few (which show up for Clang and GCC 4.2 for me) which may be of interest:
Unused Functions
Unused Parameters
Unused Value...