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Perform Segue programmatically and pass parameters to the destination view
in my app I've a button that performs a segue programmatically:
5 Answers
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Could not open a connection to your authentication agent
...nt?.
Could not open a connection to your authentication agent
To automatically start ssh-agent and allow a single instance to work in multiple console windows, see Start ssh-agent on login.
Why do we need to use eval instead of just ssh-agent?
To find out why, see Robin Green's answer.
Public v...
What does `kill -0 $pid` in a shell script do?
Basically, what signal does '0' represent, because here I see SIGNAL numbers starting from 1.
6 Answers
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Call a stored procedure with parameter in c#
... do a delete, insert and update in my program and I try to do an insert by call a created stored procedure from my database.
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Set selected item of spinner programmatically
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calling SetSelection() just after setAdapter() seem to display the 1st item always (Android 2.3), even the good one is selected in the dropView. adding view.post() (@Marco Hernaiz Cao answer) fix it for me.
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Android onCreate or onStartCommand for starting service
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onCreate() is called when the Service object is instantiated (ie: when the service is created). You should do things in this method that you need to do only once (ie: initialize some variables, etc.). onCreate() will only ever be called on...
What is the relationship between UIView's setNeedsLayout, layoutIfNeeded and layoutSubviews?
...iew that marks it as needing layout. That will force layoutSubviews to be called on the view before the next redraw happens. Note that in many cases you don't need to call this explicitly, because of the autoresizesSubviews property. If that's set (which it is by default) then any change to a vie...
How do you delete an ActiveRecord object?
...lete and delete_all which won't enforce :before_destroy and :after_destroy callbacks or any dependent association options.
User.delete_all(condition: 'value') will allow you to delete records
without a primary key
Note: from @hammady's comment, user.destroy won't work if User model has no pr...
Why switch is faster than if
...ments that will try to place the hottest branch first in the code. This is called "Branch Prediction". For more information on this, see here: https://dzone.com/articles/branch-prediction-in-java
Your experiences may vary. I don't know that the JVM doesn't run a similar optimization on LookupSwitch...
Completion handler for UINavigationController “pushViewController:animated”?
...wController:animated: returns -- thus, the completion handler will not get called until the newly-triggered animations have finished.
– Matt H.
Nov 20 '14 at 22:15
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