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Determine if code is running as part of a unit test
...ialogs (MessageBox, File dialogs, Color picker, database connection dialog etc). Classes that need to display message boxes accept ICommonDiaglogs as a constructor parameter that we can then mock in the unit test. Bonus: You can assert on expected MessageBox calls.
– Tony O'Hag...
How to refer to relative paths of resources when working with a code repository
...roject refer to one of the non-Python resources in the project (CSV files, etc.)?
8 Answers
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GitHub pages are not updating
... and it should have updated. You can do the same with the master.css file, etc.
If it doesn't work, try reloading (github.com/example/example.github.io/[blob/master/]index.html) instead and it will have updated.
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Xcode build failure “Undefined symbols for architecture x86_64”
...on
I had several targets in Xcode with several schemas ( Production , Dev etc ) .. some of my newly added implementation ( Class.m ) were missing in
Xcode->Targets->Build Phases->Compile Sources
So I had to add them manually.
then I could compile & build successfully.
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Generating a PNG with matplotlib when DISPLAY is undefined
...> matplotlib.matplotlib_fname()
# This is the file location in Ubuntu
'/etc/matplotlibrc'
Then modify the backend in that file to backend : Agg. That is it.
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Rolling median algorithm in C
... first idea partitions the data into two data structures (heaps, multisets etc) with O(ln N) per insert/delete does not allow the quantile to be changed dynamically without a large cost. I.e. we can have a rolling median, or a rolling 75% but not both at the same time.
Segment tree
The second idea...
throw Error('msg') vs throw new Error('msg')
...es act like a factory, like some other native constructors: Array, Object, etc. all check something like if (!(this instanceof Array)) { return new Array(arguments); }. (But note that String(x) and new String(x) are very different, and likewise for Number and Boolean.)
That said, in case of an erro...
Efficient way to apply multiple filters to pandas DataFrame or Series
...i'd used: df[f_2 & f_3 & f_4 & f_5 ] with f_2 = df["a"] >= 0etc. No need for that function... (nice use of higher order function though...)
– A. Rabus
Aug 29 '19 at 8:29
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How do I tidy up an HTML file's indentation in VI?
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FYI, tidy chokes if the HTML includes SVG (e.g., charts, etc.).
– Alex Quinn
Jan 24 '17 at 22:49
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How to validate an Email in PHP?
...ess can contain UTF-8 characters or special domain names like .live, .news etc.
Also I find that some email address can be on Cyrilic and on all cases standard regex or filter_var() will fail.
That's why I made an solution for it:
function valid_email($email)
{
if(is_array($email) || is_nume...