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Flask-SQLalchemy update a row's information
How can I update a row's information?
5 Answers
5
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Python: How do I make a subclass from a superclass?
...thon's built-in function, super() (see the Python 2/Python 3 documentation for it) may be a slightly better method of calling the parent for initialization:
# Better initialize using Parent (less redundant).
#
class MySubClassBetter(MySuperClass):
def __init__(self):
super(MySubClassBet...
How can I add new keys to a dictionary?
...
>>> x.update(d)
>>> print(x)
{1: 2, 3: 4, 5: 6, 7: 8}
For adding a single key, the accepted answer has less computational overhead.
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Determine command line working directory when running node bin script
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@reergymerej You'll probably want to store cwd first before executing chdir() (e.g., var originalCwd = process.cwd(); then execute your process.chdir(), and you can return to the original afterwards).
– Swivel
Aug 16 '16 at 21:11
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Counting inversions in an array
I'm designing an algorithm to do the following: Given array A[1... n] , for every i < j , find all inversion pairs such that A[i] > A[j] . I'm using merge sort and copying array A to array B and then comparing the two arrays, but I'm having a difficult time seeing how I can use this to find...
C# Sanitize File Name
...em.IO.Path.GetInvalidFileNameChars() ) );
string invalidRegStr = string.Format( @"([{0}]*\.+$)|([{0}]+)", invalidChars );
return System.Text.RegularExpressions.Regex.Replace( name, invalidRegStr, "_" );
}
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How do I initialize a TypeScript object with a JSON object
...on-default constructor with no arguments, but the class better be prepared for it then (plus, it wouldn't really be the "typescripty way").
Option #1: No run-time information at all
The problem with this approach is mostly that the name of any member must match its class. Which automatically limit...
What is the worst gotcha in C# or .NET? [closed]
...
and SO appropriate for this site :)
– gbjbaanb
Oct 27 '08 at 23:18
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multiprocessing.Pool: When to use apply, apply_async or map?
I have not seen clear examples with use-cases for Pool.apply , Pool.apply_async and Pool.map . I am mainly using Pool.map ; what are the advantages of others?
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How can I split and parse a string in Python?
...fter the first split, use "2.7.0_bf4fda703454".split("_", 1).
If you know for a fact that the string contains an underscore, you can even unpack the LHS and RHS into separate variables:
In [8]: lhs, rhs = "2.7.0_bf4fda703454".split("_", 1)
In [9]: lhs
Out[9]: '2.7.0'
In [10]: rhs
Out[10]: 'bf4fd...