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ActiveRecord: List columns in table from console
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If you are comfortable with SQL commands, you can enter your app's folder and run rails db, which is a brief form of rails dbconsole. It will enter the shell of your database, whether it is sqlite or mysql.
Then, you can query the table columns using sql command like:
pragma table_i...
Take screenshots in the iOS simulator
I want to take a screenshot of my iOS application when it is running in the simulator, and save the screenshot on my Mac. How can I do this?
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TypeError: ObjectId('') is not JSON serializable
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@defuz Why not just use str? What's wrong with that approach?
– Kevin
May 13 '17 at 16:27
@defu...
How to resolve : Can not find the tag library descriptor for “http://java.sun.com/jsp/jstl/core” [du
... -> 'Targeted Runtimes' and select the server you going to run your web app on (Tomcat 6 or 7).
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How using try catch for exception handling is best practice
...ndling strategy is :
To catch all unhandled exceptions by hooking to the Application.ThreadException event, then decide :
For a UI application: to pop it to the user with an apology message (winforms)
For a Service or a Console application: log it to a file (service or console)
Then I always ...
UITextView style is being reset after setting text property
...Text and after call method setText property font is being reset.
It's happening after I change sdk 7.
_masterText is IBOutlet , global and properties are set in storyboard. It's only me or this is general SDK bug?
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How to display multiple notifications in android
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If I see this right, the apporach from tieorange only works with seconds. So if you have multiple notifications at the same second, this will not work.
– testing
Sep 12 '17 at 16:01
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How to identify if the DLL is Debug or Release build (in .NET) [duplicate]
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IMHO, The above application is really misleading; it only looks for the IsJITTrackingEnabled which is completely independent of whether or not the code is compiled for optimization and JIT Optimization.
The DebuggableAttribute is present if...
Checking if a string is empty or null in Java [duplicate]
...ementation 'org.apache.commons:commons-text:1.7' } in build.gradle (Module app). If there is already a dependencies block then just insert a new line with this dependency. This is the latest recommended version, as of Feb '20 (see stackoverflow.com/a/55567755/1541141). Then clean and/or sync your pr...
AngularJS: ng-show / ng-hide not working with `{{ }}` interpolation
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Try wrapping expression with:
$scope.$apply(function() {
$scope.foo.bar=true;
})
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