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How can I make a UITextField move up when the keyboard is present - on starting to edit?
With the iOS SDK:
95 Answers
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What is the preferred/idiomatic way to insert into a map?
I have identified four different ways of inserting elements into a std::map :
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How to resize superview to fit all subviews with autolayout?
My understanding of autolayout is that it takes the size of superview and base on constrains and intrinsic sizes it calculates positions of subviews.
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Understanding implicit in Scala
I was making my way through the Scala playframework tutorial and I came across this snippet of code which had me puzzled:
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How does the Java 'for each' loop work?
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If strings are immutable in .NET, then why does Substring take O(n) time?
Given that strings are immutable in .NET, I'm wondering why they have been designed such that string.Substring() takes O( substring.Length ) time, instead of O(1) ?
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Simple Digit Recognition OCR in OpenCV-Python
I am trying to implement a "Digit Recognition OCR" in OpenCV-Python (cv2). It is just for learning purposes. I would like to learn both KNearest and SVM features in OpenCV.
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Are there disadvantages to using a generic varchar(255) for all text-based fields?
I have a contacts table which contains fields such as postcode , first name , last name , town , country , phone number etc, all of which are defined as VARCHAR(255) even though none of these fields will ever come close to having 255 characters. (If you're wondering, it's this way becaus...
How do Python functions handle the types of the parameters that you pass in?
Unless I'm mistaken, creating a function in Python works like this:
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Why do this() and super() have to be the first statement in a constructor?
Java requires that if you call this() or super() in a constructor, it must be the first statement. Why?
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