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How I can I lazily read multiple JSON values from a file/stream in Python?
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11 Answers
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Signed to unsigned conversion in C - is it always safe?
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Your i will be converted to an unsigned integer by adding UINT_MAX + 1, then the addition will be carried out with the unsigned values, resulting in a large result (depending on the values of u and i).
Long Answer
According to the C99 Standard:
6.3.1.8 Usual arithmetic conversions
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MongoDB Aggregation: How to get total records count?
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13 Answers
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Does a break statement break from a switch/select?
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201
Break statements, The Go Programming Language Specification.
A "break" statement termina...
How to correctly close a feature branch in Mercurial?
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218
One way is to just leave merged feature branches open (and inactive):
$ hg up default
$ hg mer...
How can I convert this foreach code to Parallel.ForEach?
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128
string[] lines = File.ReadAllLines(txtProxyListPath.Text);
List<string> list_lines = new...
How can I implode an array while skipping empty array items?
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212
You can use array_filter():
If no callback is supplied, all entries of input equal to FALSE...
Replace only text inside a div using jquery
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136
Text shouldn't be on its own. Put it into a span element.
Change it to this:
<div id="one...
How to see which flags -march=native will activate?
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152
You can use the -Q --help=target options:
gcc -march=native -Q --help=target ...
The -v opt...
Pandas count(distinct) equivalent
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Example:
In [2]: table
Out[2]:
CLIENTCODE YEARMONTH
0 1 201301
1 1 201301
2 2 201301
3 1 201302
4 2 201302
5 2 201302
6 3 201302
In [3]: table.groupby('YEARMONTH').CLIENTCODE.nunique()
Out[3...