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How to trace the path in a Breadth-First Search?
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# graph is in adjacent list representation
graph = {
'1': ['2', '3', '4'],
'2': ['5', '6'],
'5': ['9', '10'],
'4': ['7', '8'],
'7': ['11', '12']
}
def bfs(graph, start, end):
# maintain a queue of paths
queue = []
# push the first path i...
What does “WARN Could not determine content-length of response body.” mean and how to I get rid of i
Since upgrading to Rails 3.1 I'm seeing this warning message in my development log:
9 Answers
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Ternary operator is twice as slow as an if-else block?
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376
To answer this question, we'll examine the assembly code produced by the X86 and X64 JITs for ...
Where should Rails 3 custom validators be stored?
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answered Jul 7 '11 at 12:03
gbcgbc
7,63755 gold badges3232 silver badges3030 bronze badges
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Select top 10 records for each category
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answered Oct 7 '08 at 2:13
Darrel MillerDarrel Miller
126k2828 gold badges179179 silver badges234234 bronze badges
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Array Size (Length) in C#
... is a rectangular multi-dimensional array (for example, int[,] b = new int[3, 5];)
b.Rank
will give the number of dimensions (2) and
b.GetLength(dimensionIndex)
will get the length of any given dimension (0-based indexing for the dimensions - so b.GetLength(0) is 3 and b.GetLength(1) is 5).
S...
Check if a string contains another string
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390
Use the Instr function
Dim pos As Integer
pos = InStr("find the comma, in the string", ",")
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Java: Class.this
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Rarblack
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answered Apr 3 '11 at 14:51
aioobeaioobe
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How do I call setattr() on the current module?
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223
import sys
thismodule = sys.modules[__name__]
setattr(thismodule, name, value)
or, without u...
How do I return multiple values from a function? [closed]
...t; p.x, p.y
1 2
>>> p[0], p[1]
1 2
In recent versions of Python 3 (3.6+, I think), the new typing library got the NamedTuple class to make named tuples easier to create and more powerful. Inheriting from typing.NamedTuple lets you use docstrings, default values, and type annotations.
Exa...