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typeof !== “undefined” vs. != null
...e would use the !== or === operators when comparing a value whose type is known to be a string.
– Nicolas Rinaudo
Aug 30 '13 at 7:38
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Understanding FFT output
... as sqrt (real * real + imag * imag). This number will always be positive. Now all you have to search is for the maximum value (ignore the first entry in your array. That is your DC offset and carries no frequency dependent information).
You get 32 real and 32 imaginary outputs because you are usin...
Undefined behavior and sequence points
...s answer is a bit long. So have patience while reading it. If you already know these things, reading them again won't make you crazy.
Pre-requisites : An elementary knowledge of C++ Standard
What are Sequence Points?
The Standard says
At certain specified points in the execution sequenc...
What is the difference between parseInt(string) and Number(string) in JavaScript? [duplicate]
...aN). And the biggest difference is the use of radix that Number() doesn't know of and parseInt() may indirectly guess from the given string (that can cause weird results sometimes).
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“Pretty” Continuous Integration for Python
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Nose now includes the xunit plugin by default - nosetests --with-xunit
– dbr
Oct 13 '09 at 1:01
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Visual Studio hot keys change occasionally, specifically F6 vs Ctrl-Shift-B for building. WHY?
...lid question and would be put out if someone voted to close it. Of course now that I've said that, its a certaintity, isn't it?
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How do I set the time zone of MySQL?
... this answer.
To get the current timezone offset as TIME
SELECT TIMEDIFF(NOW(), UTC_TIMESTAMP);
It will return 02:00:00 if your timezone is +2:00.
To get the current UNIX timestamp:
SELECT UNIX_TIMESTAMP();
SELECT UNIX_TIMESTAMP(NOW());
To get the timestamp column as a UNIX timestamp
SELECT...
How is “int main(){(([](){})());}” valid C++?
...hem, so that's what the first pair of parens around the lambda does. We're now at ([](){}).
Then, () after the first wrapping parens calls the (empty) lambda. We're now at ([](){})()
The whole expression is wrapped in parens again and we get (([](){})()).
At last, ; ends the statement. We arrive ...
How to pass prepareForSegue: an object
...ew controllers. The first contains three buttons and the second needs to know which of those buttons has been pressed before the transition. You could wire the buttons up to an IBAction in your code which uses performSegueWithIdentifier: method, like this...
// When any of my buttons are pressed...
Convert Python program to C/C++ code? [closed]
...until 0.9.5 (included), Pythran was supporting Python 3 and Python 2.7. It now only supports Python 3."
– Make42
Aug 24 at 17:12
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