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How to style a div to be a responsive square? [duplicate]
I want my div to adapt its height to always equal its width. The width is percental. When the parent's width decreases, the box should decrease by keeping its aspect ratio.
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Is python's sorted() function guaranteed to be stable?
The documentation doesn't guarantee that. Is there any other place that it is documented?
5 Answers
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NSUserDefaults - How to tell if a key exists
...king on a small iPhone app, and I am using NSUserDefaults as my data persistence. It only has to keep track of a few things, such as some names and some numbers so I figure I might as well keep it simple.
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How do I bind a WPF DataGrid to a variable number of columns?
... may have a different number of columns each time. Included in the output is a description of each column that will be used to apply formatting. A simplified version of the output might be something like:
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What is the difference between onBlur and onChange attribute in HTML?
When is one called versus the other? Is there a situation were onChange would be called but onBlur would not be called?
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SQL - find records from one table which don't exist in another
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There's several different ways of doing this, with varying efficiency, depending on how good your query optimiser is, and the relative size of your two tables:
This is the shortest statement, and may be quickest if your phone book is very short:
SELECT *
FROM C...
Getting full URL of action in ASP.NET MVC [duplicate]
Is there a built-in way of getting the full URL of an action?
6 Answers
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How do I prevent an Android device from going to sleep programmatically?
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One option is to use a wake lock. Example from the docs:
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, "My Tag");
wl.acquire();
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`from … import` vs `import .` [duplicate]
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edited Jan 29 '14 at 6:40
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How to print the contents of RDD?
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If you want to view the content of a RDD, one way is to use collect():
myRDD.collect().foreach(println)
That's not a good idea, though, when the RDD has billions of lines. Use take() to take just a few to print out:
myRDD.take(n).foreach(println)
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