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Create a dictionary on a list with grouping

... i thought that a lookup performs not that good, compared to a built dictionary, in a longterm-environment, due it builds up the result fresh for every request... please correct me, if i'm wrong! – Andreas Niedermair ...
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Using .otf fonts on web browsers

...-face { font-family: GraublauWeb; src: url("path/GraublauWeb.otf") format("opentype"); } @font-face { font-family: GraublauWeb; font-weight: bold; src: url("path/GraublauWebBold.otf") format("opentype"); } // Edit: OTF now works in most browsers, see comments However if you wan...
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How can I create a Set of Sets in Python?

...bjects are mutable and thus not hashable. The solution is to use frozenset for the inner sets, to indicate that you have no intention of modifying them. share | improve this answer | ...
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Python's “in” set operator

I'm a little confused about the python in operator for sets. 5 Answers 5 ...
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In Jinja2, how do you test if a variable is undefined?

... {% if variable is defined and variable %} would also check for emptiness – Vivek May 17 '19 at 9:00 add a comment  |  ...
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Undo a git stash

... a project that I haven't commit. Is there a way to go back to the state before I stashed? How could I do this? I've closed the terminal and my laptop is shut down. I've done some researched and it seems there's no way to do this. ...
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How do I get a string format of the current date time, in python?

For example, on July 5, 2010, I would like to calculate the string 4 Answers 4 ...
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Sass calculate percent minus px

... Sass cannot perform arithmetic on values that cannot be converted from one unit to the next. Sass has no way of knowing exactly how wide "100%" is in terms of pixels or any other unit. That's something only the browser knows. You need to...
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What is ModelState.IsValid valid for in ASP.NET MVC in NerdDinner?

...e been added to ModelState. The default model binder will add some errors for basic type conversion issues (for example, passing a non-number for something which is an "int"). You can populate ModelState more fully based on whatever validation system you're using. The sample DataAnnotations model ...
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How to get execution time in rails console?

... Here is my version of how to measure performance automatically in rails console using gem: https://github.com/igorkasyanchuk/execution_time It's showing similar information which you already see during requests. Sample: [METRICS] Completed in 908.3ms | Allocati...