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What is the difference between indexOf() and search()?
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If you require a regular expression, use search(). Otherwise, indexOf() is going to be faster.
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Is there an equivalent for the Zip function in Clojure Core or Contrib?
... (zipWith3, zipWith4, ...) functions, because they all need to be of a specific type; in particular, the number of input lists they accept needs to be fixed. (The zip, zip2, zip3, ... family can be regarded as a specialisation of the zipWith family for the common use case of tupling).
In contrast, ...
Replacing Pandas or Numpy Nan with a None to use with MysqlDB
...ases you don't need to replace NaN with None, see this question about the difference between NaN and None in pandas.
However, in this specific case it seems you do (at least at the time of this answer).
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How to filter files when using scp to copy dir recursively?
...ecursive
-a for archive (mostly all files)
-v for verbose output
-e to specify ssh instead of the default (which should be ssh, actually)
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Saving and loading objects and using pickle
...play expression in the online documentation. It's just one of the several different ways an object of type dict, which is one of several standard built-in datatypes available in Python, can be constructed.
– martineau
Dec 25 '10 at 21:52
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Get css top value as number not as string?
...the parent as a number, but you can not get the css top value as a number if it was set in px .
Say I have the following:
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What is the role of src and dist folders?
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src/ stands for source, and is the raw code before minification or concatenation or some other compilation - used to read/edit the code.
dist/ stands for distribution, and is the minified/concatenated version - actually used on production sites.
This is a common task that is d...
How to use mod operator in bash?
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If someone needs this for mathematical operations, note that modulo operation with negative numbers in bash returns only remainder, not mathematical modulo result. This means, that while mathematically -12 mod 10 is 8, bash...
Managing constructors with many parameters in Java
... .motto("Aloha, Mr Hand")
.buildStudent();
If we leave off a required field (presumably name is required) then we can have the Student constructor throw an exception.
And it lets us have default/optional arguments without needing to keep track of any kind of argument ...
Postgresql query between date ranges
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With dates (and times) many things become simpler if you use >= start AND < end.
For example:
SELECT
user_id
FROM
user_logs
WHERE
login_date >= '2014-02-01'
AND login_date < '2014-03-01'
In this case you still need to calculate the start date of ...