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Rails 3 execute custom sql query without a model
I need to write a standalone ruby script that is supposed to deal with database. I used code given below in rails 3
5 Answe...
django: BooleanField, how to set the default value to true?
...lay. This value
is not used as a fallback if data isn't given.
And if you dig into the code of form validation process, you will find that, for each fields, form will call it's widget's value_from_datadict to get actual value, so this is the place where we can inject default value.
To d...
viewWillDisappear: Determine whether view controller is being popped or is showing a sub-view contro
... I've just been trying to perform the same thing but in viewWillAppear and it would seem that whether the view controller is being revealed by it being pushed or something above it being popped, The viewControllers array is the same both ways! Any ideas?
– Michael Waterfall...
How to disable back swipe gesture in UINavigationController on iOS 7
...mplement UIGestureRecognizerDelegate protocol with your more complex logic and set it as recognizer.delegate property.
– ArtFeel
Nov 25 '13 at 12:25
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Converting a view to Bitmap without displaying it in Android?
...
there is a way to do this. you have to create a Bitmap and a Canvas and call view.draw(canvas);
here is the code:
public static Bitmap loadBitmapFromView(View v) {
Bitmap b = Bitmap.createBitmap( v.getLayoutParams().width, v.getLayoutParams().height, Bitmap.Config.ARGB_8888...
What is the difference between String.Empty and “” (empty string)?
In .NET, what is the difference between String.Empty and "" , and are they interchangable, or is there some underlying reference or Localization issues around equality that String.Empty will ensure are not a problem?
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What's an easy way to read random line from a file in Unix command line?
What's an easy way to read random line from a file in Unix command line?
13 Answers
13...
WatiN or Selenium? [closed]
... tests of our presentation soon. It seems that everyone recommends WatiN and Selenium . Which do you prefer for automated testing of ASP.NET web forms? Which of these products work better for you?
...
How to detect if app is being built for device or simulator in Swift
...pect the TARGET_OS_SIMULATOR variable (or TARGET_IPHONE_SIMULATOR in iOS 8 and below), which is truthy on a simulator.
Please notice that this is different and slightly more limited than using a preprocessor flag. For instance you won't be able to use it in place where a if/else is syntactically in...
AngularJS: How can I pass variables between controllers?
... way to share variables across multiple controllers is to create a service and inject it in any controller where you want to use it.
Simple service example:
angular.module('myApp', [])
.service('sharedProperties', function () {
var property = 'First';
return {
getP...