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How to determine if a string is a number with C++?
...If you need to detect negative integers or fractions, you should go with a more robust library-based solution. Although, adding support for negative integers is pretty trivial.
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MongoDB with redis
... for persistent, document oriented, data indexed in various ways. Redis is more interesting for volatile data, or latency sensitive semi-persistent data.
Here are a few examples of concrete usage of Redis on top of MongoDB.
Pre-2.2 MongoDB does not have yet an expiration mechanism. Capped collect...
What is the result of % in Python?
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Please update your answer, there are more accurate answers below. In C / C++ % is for 'rem' whereas in Python % is for 'mod'. e.g. - 21 % 4 is 3 in Python.
– azam
Aug 3 '16 at 13:05
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How do I download a file over HTTP using Python?
...st basic way to use the library, minus any error handling. You can also do more complex stuff such as changing headers.
On Python 2, the method is in urllib2:
import urllib2
response = urllib2.urlopen('http://www.example.com/')
html = response.read()
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How can I echo a newline in a batch file?
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twig: IF with multiple conditions
...e used respectively. I'd also use parentheses to denote the two statements more clearly although this isn't technically a requirement.
{%if ( fields | length > 0 ) or ( trans_fields | length > 0 ) %}
Expressions
Expressions can be used in {% blocks %} and ${ expressions }.
Operator Des...
MySQL Workbench: How to keep the connection alive
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Bash set +x without it being printed
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How to download a file with Node.js (without using third-party libraries)?
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Releasing memory in Python
...(M_TRIM_THRESHOLD). Given this, it isn't surprising if the heap shrinks by more -- even a lot more -- than the block that you free.
In 3.x range doesn't create a list, so the test above won't create 10 million int objects. Even if it did, the int type in 3.x is basically a 2.x long, which doesn't ...