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Iterating Over Dictionary Key Values Corresponding to List in Python
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43
dict.iteritems() was removed since Python3. You should use dict.items() instead
– Sergey
Jan 21 '16 ...
Nested JSON objects - do I have to use arrays for everything?
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204
You don't need to use arrays.
JSON values can be arrays, objects, or primitives (numbers or str...
How to make the 'cut' command treat same sequental delimiters as one?
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Try:
tr -s ' ' <text.txt | cut -d ' ' -f4
From the tr man page:
-s, --squeeze-repeats replace each input sequence of a repeated character
that is listed in SET1 with a single occurrence
of that character
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R - Concatenate two dataframes?
...umn b to data frame b.
Results
> a <- data.frame(a=c(0,1,2), b=c(3,4,5), c=c(6,7,8))
> a
a b c
1 0 3 6
2 1 4 7
3 2 5 8
> b <- data.frame(a=c(9,10,11), c=c(12,13,14))
> b
a c
1 9 12
2 10 13
3 11 14
> b$b <- NA
> b
a c b
1 9 12 NA
2 10 13 NA
3 11 14 NA
> ne...
Python Dictionary to URL Parameters
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answered Aug 5 '09 at 14:16
mipadimipadi
343k7777 gold badges492492 silver badges464464 bronze badges
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How to convert a string or integer to binary in Ruby?
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marzapower
5,34666 gold badges3333 silver badges7070 bronze badges
answered Feb 26 '10 at 8:52
Mike WoodhouseMike W...
Why does parseInt yield NaN with Array#map?
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483
The callback function in Array.map has three parameters:
From the same Mozilla page that you ...
Filtering a list based on a list of booleans
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>>> from itertools import compress
>>> list_a = [1, 2, 4, 6]
>>> fil = [True, False, True, False]
>>> list(compress(list_a, fil))
[1, 4]
Timing comparisons(py3.x):
>>> list_a = [1, 2, 4, 6]
>>> fil = [True, False, True, False]
>>> %...
.NET JIT potential error?
...l 0000000C
The bug disappears when you let oVec.y increment to 4, that's too many calls to unroll.
One workaround is this:
for (int x = 0; x < 2; x++) {
for (int y = 0; y < 2; y++) {
oDoesSomething.Do(new IntVec(x, y));
}
}
UPDATE: re-checked in August 2012, t...