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How to extract numbers from a string in Python?
...f you can't accept these limitations, jmnas's answer below will do the trick.
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How to check if std::map contains a key without doing insert?
The only way I have found to check for duplicates is by inserting and checking the std::pair.second for false , but the problem is that this still inserts something if the key is unused, whereas what I want is a map.contains(key); function.
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Detect if a NumPy array contains at least one non-numeric value?
...eturn a numeric value). The number of dimensions of the input array is not known in advance - the function should give the correct value regardless of ndim. As an extra complication the input could be a single float or numpy.float64 or even something oddball like a zero-dimensional array.
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DateTime “null” value
...e a class which might have a DateTime property value set or not. I was thinking of initializing the property holder to DateTime.MinValue, which then could easily be checked. I guess this is a quite common question, how do you do that?
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What is Eclipse's Ctrl+O (Show Outline) shortcut equivalent in IntelliJ IDEA?
I like to use Eclipse's shortcut Ctrl + O which outlines the current source. Is there an equivalent shortcut in IntelliJ IDEA?
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How to make RatingBar to show five stars
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Alex VolovoyAlex Volovoy
63.9k1313 gold badges7171 silver badges5252 bronze badges
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Set Django IntegerField by choices=… name
... seen here. Then you can use a word that represents the proper integer.
Like so:
LOW = 0
NORMAL = 1
HIGH = 2
STATUS_CHOICES = (
(LOW, 'Low'),
(NORMAL, 'Normal'),
(HIGH, 'High'),
)
Then they are still integers in the DB.
Usage would be thing.priority = Thing.NORMAL
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What is the fastest way to get the value of π?
I'm looking for the fastest way to obtain the value of π, as a personal challenge. More specifically, I'm using ways that don't involve using #define constants like M_PI , or hard-coding the number in.
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Select count(*) from multiple tables
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QuassnoiQuassnoi
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Strip all non-numeric characters from string in JavaScript
... JavaScript/ECMAScript. Any characters that are in range 0 - 9 should be kept.
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