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How can I check if an argument is defined when starting/calling a batch file?
... as Dave Costa points out, "%1"=="" will also work.
I also fixed a syntax error in the usage echo to escape the greater-than and less-than signs. In addition, the exit needs a /B argument otherwise CMD.exe will quit.
@echo off
if [%1]==[] goto usage
@echo This should not execute
@echo Done.
goto ...
Postgresql: password authentication failed for user “postgres”
...u postgres psql
If that fails with a database "postgres" does not exists error, then you are most likely not on a Ubuntu or Debian server :-) In this case simply add template1 to the command:
sudo -u postgres psql template1
If any of those commands fail with an error psql: FATAL: password auth...
Java - How to create new Entry (key, value)
...
The above line returns compilation error for me (I am using java 5, BTW) - error message is: 'The type AbstractMap.SimpleEntry is not visible'
– Spiderman
Jun 24 '10 at 14:01
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Gridview height gets cut
...taset. But regardless, thanks for the code. I think there is an off-by-one error though - I had to use int rows = items / columns + 1;
– Andrew
Nov 27 '14 at 3:12
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UIImage: Resize, then Crop
... images, fails with: CGContextSetInterpolationQuality: invalid context 0x0 error"
// Resizes the image according to the given content mode, taking into account the image's orientation
- (UIImage *)resizedImageWithContentMode:(UIViewContentMode)contentMode imageToScale:(UIImage*)imageToScale bounds:...
Can Protractor and Karma be used together?
...t immediate feedback, which is brilliant! The only negative is the "noisy" error reporting that will hopefully improve!
Karma is not only for unit tests
Unit test is for a single unit of your source code. In Angular's case a typical unit is Angular Component (Service, Factory, Provider, Controll...
Android YouTube app Play Video Intent
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I'm getting the following error. ERROR/AndroidRuntime(1519): Caused by: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.google.android.youtube/com.google.android.youtube.PlayerActivity}; have you declared th...
TransformXml task could not be loaded from Microsoft.Web.Publishing.Tasks.dll
Has anyone seen this error and know how to fix it?
10 Answers
10
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Creating the Singleton design pattern in PHP5
...nstance();
$fact == $fact2;
But:
$fact = new UserFactory()
Throws an error.
See http://php.net/manual/en/language.variables.scope.php#language.variables.scope.static to understand static variable scopes and why setting static $inst = null; works.
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Force line-buffering of stdout when piping to tee
...ering
-o, --output=MODE adjust standard output stream buffering
-e, --error=MODE adjust standard error stream buffering
If MODE is 'L' the corresponding stream will be line buffered.
This option is invalid with standard input.
If MODE is '0' the corresponding stream will be unbuffered.
Oth...