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What are the best practices for JavaScript error handling?
... catch , finally , and throw , but I'm not finding a ton of advice from experts on when and where to throw errors.
5 Answ...
Version vs build in Xcode
I have an app that I developed with Xcode 3 and recently started editing with Xcode 4. In the target summary I have the iOS application target form with fields: identifier, version, build, devices, and deployment target. The version field is blank and the build field is 3.4.0 (which matches the vers...
Difference between objectForKey and valueForKey?
...nary method. An NSDictionary is a collection class similar to an NSArray, except instead of using indexes, it uses keys to differentiate between items. A key is an arbitrary string you provide. No two objects can have the same key (just as no two objects in an NSArray can have the same index).
val...
Fragment onCreateView and onActivityCreated called twice
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I was scratching my head about this for a while too, and since Dave's explanation is a little hard to understand I'll post my (apparently working) code:
private class TabListener<T extends Fragment> implements ActionBar.TabListener {
private Fragment mFragment;
private Activity mA...
Converting an array of objects to ActiveRecord::Relation
... data.
However, if what you want is a relation then:
for ActiveRecord 3.x, don’t call all and instead call scoped, which will give back a Relation which represents the same records that all would give you in an Array.
for ActiveRecord 4.x, simply call all, which returns a Relation.
When ru...
How to detect when cancel is clicked on file input?
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How to change the session timeout in PHP?
I would like to extend the session timeout in php
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How to create module-wide variables in Python? [duplicate]
...ears below, the Python interpreter said the variable __DBNAME__ did not exist.
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How to resize superview to fit all subviews with autolayout?
...tingSize:, passing either UILayoutFittingCompressedSize or UILayoutFittingExpandedSize.
For a normal UIView using autolayout this should just work as long as your constraints are correct. If you want to use it on a UITableViewCell (to determine row height for example) then you should call it again...
How dangerous is it to access an array out of bounds?
...of my program or even beyond that) or I am trying to set a value to an index outside of the array. The program sometimes crashes, but sometimes just runs, only giving unexpected results.
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