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How can I check if a string represents an int, without using try/except?
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You have to test for BOTH cases: lambda s: s.isdigit() or (s.startswith('-') and s[1:].isdigit())
– rob
Aug 12 '09 at 13:39
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Why does this go into an infinite loop?
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if you make a test, you can see that it first increments, and later attributes. So it should not attribute zero.
– Tom Brito
Sep 30 '10 at 14:16
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Test if lists share any items in python
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Short answer: use not set(a).isdisjoint(b), it's generally the fastest.
There are four common ways to test if two lists a and b share any items. The first option is to convert both to sets and check their intersection, as such:
bool(set(a) & set(b))
Because sets are stored using a h...
Best way to test if a row exists in a MySQL table
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Test with ...EXISTS( SELECT 1/0 FROM someothertable). For SQL Server & Oracle - it makes no difference to use *, 1 or NULL because EXISTS only tests for a boolean based on 1+ of the WHERE criteria matching.
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Understanding the main method of python [duplicate]
...alled from the command line. In many cases this is used for managing unit tests. If a particular file defines functionality which is only useful in the context of other components of a system then one can still use __name__ == "__main__" to isolate a block of code which calls a suite of unit tests...
Can you test google analytics on a localhost address?
I have to test out my new GA account on my local machine.
12 Answers
12
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Exporting functions from a DLL with dllexport
..."C" removes the decoration so that instead of :
__declspec(dllexport) int Test(void) --> dumpbin : ?Test@@YaHXZ
you obtain a symbol name undecorated:
extern "C" __declspec(dllexport) int Test(void) --> dumpbin : Test
However the _stdcall ( = macro WINAP...
How do I check for C++11 support?
...ive page is at https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations
In summary, each feature has a standard macro defined that you can check with #ifdef. For example, to check for user defined literals, you can use
#ifdef __cpp_user_defined_literals
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Proper way to return JSON using node or Express
...response with as small load as possible.
$ curl -i -X GET http://echo.jsontest.com/key/value/anotherKey/anotherValue | underscore print
https://github.com/ddopson/underscore-cli
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Open a URL in a new tab (and not a new window)
...the default user preference in most browsers is for new tabs, so a trivial test on a browser where that preference hasn't been changed will not demonstrate this.)
CSS3 proposed target-new, but the specification was abandoned.
The reverse is not true; by specifying dimensions for the window in the ...