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MySQL: selecting rows where a column is null
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NULL = NULL is not really FALSE - it's NULL again. But it's not TRUE either, so IF(NULL = NULL) won't execute.
– Konerak
Jan 12 '11 at 19:50
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What is the difference between tree depth and height?
... node" it is not correct , the leaf must be the one which is deepest among all the leaves of the given node.
– mightyWOZ
Jul 14 '16 at 7:53
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What happens when there's insufficient memory to throw an OutOfMemoryError?
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The JVM never really runs out of memory. It does memory computation of the heap stack in advance.
The Structure of the JVM, Chapter 3, section 3.5.2 states:
If Java virtual machine stacks can be dynamically expanded, and expansion is...
Programmatically set the initial view controller using Storyboards
How do I programmatically set the InitialViewController for a Storyboard? I want to open my storyboard to a different view depending on some condition which may vary from launch to launch.
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How does the const constructor actually work?
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Const constructor creates a "canonicalized" instance.
That is, all constant expressions begin canonicalized, and later these "canonicalized" symbols are used to recognize equivalence of these constants.
Canonicalization:
A process for converting data that has more than one possible rep...
Build the full path filename in Python
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This works fine:
os.path.join(dir_name, base_filename + "." + filename_suffix)
Keep in mind that os.path.join() exists only because different operating systems use different path separator characters. It smooths over that difference so cross-platform code d...
Databinding an enum property to a ComboBox in WPF
... the amount of code required by WPF to accomplish simpliest of things is really headspinning
– Konrad Morawski
Aug 29 '12 at 14:36
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Why doesn't os.path.join() work in this case?
... the Python docs for os.path.join:
If a component is an absolute path, all previous components are thrown away and joining continues from the absolute path component.
Note on Windows, the behaviour in relation to drive letters, which seems to have changed compared to earlier Python versions:
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How to print a string in fixed width?
I have this code (printing the occurrence of the all permutations in a string)
5 Answers
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Return index of greatest value in an array
...s say I have more than one index with the same highest value, how do I get all these indexes?
– ed1nh0
Apr 15 '19 at 14:02
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