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Mongoose populate after save
...or,
set: set_creator
},
description: String,
});
NOTE: I didn't test it and it might work strangely with .populate and when setting pure id.
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How can I apply a function to every row/column of a matrix in MATLAB?
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I would test performance of this approach for any particular case against simple for-loop, which might be faster then converting a matrix to cell array. Use tic/tac wrap to test.
– yuk
Feb 21 '1...
Update multiple rows in same query using PostgreSQL
...want to update more than one column, it's much more generalizable:
update test as t set
column_a = c.column_a
from (values
('123', 1),
('345', 2)
) as c(column_b, column_a)
where c.column_b = t.column_b;
You can add as many columns as you like:
update test as t set
column_a = ...
How to generate JAXB classes from XSD?
... it.
e.g. generate.bat:
[your java home dir]\bin\xjc.exe %1 %2 %3
e.g. test-scheme.xsd:
<?xml version="1.0"?>
<xs:schema version="1.0"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified"
targetNamespace="http://myprojects.net/xsd...
Installing Python 3 on RHEL
...nicode/char/200c/index.htm The URL in my original answer works, I've just tested it.
– Samuel Phan
Sep 7 '15 at 9:01
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In C, do braces act as a stack frame?
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It's implementation dependent. I wrote a short program to test what gcc 4.3.4 does, and it allocates all of the stack space at once at the start of the function. You can examine the assembly that gcc produces using the -S flag.
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What are metaclasses in Python?
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Lets define a metaclass that will demonstrate how 'class:' calls it.
def test_metaclass(name, bases, dict):
print 'The Class Name is', name
print 'The Class Bases are', bases
print 'The dict has', len(dict), 'elems, the keys are', dict.keys()
return "yellow"
class TestName(object...
Does Git warn me if a shorthand commit ID can refer to 2 different commits?
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'git <command> [<revision>...] -- [<file>...]'
I just tested this on a real Git repository, by finding commits with duplicate prefixes like this:
git rev-list master | cut -c-4 | sort | uniq -c | sort -nr | head
This takes the list of revisions in master, cuts out the first 4...
What is the proper way to comment functions in Python?
...hers have already written.
You can even go one step further and add a doctest to your docstring, making automated testing of your functions a snap.
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Why doesn't print work in a lambda?
...compatibility :) use the back-ported print function if you are using the latest Python 2.x:
In [1324]: from __future__ import print_function
In [1325]: f = lambda x: print(x)
In [1326]: f("HI")
HI
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