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How to understand nil vs. empty vs. blank in Ruby
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Quick tip: !obj.blank? == obj.present?
Can be handy/easier on the eyes in some expressions
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How to change the CHARACTER SET (and COLLATION) throughout a database?
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change database collation:
ALTER DATABASE <database_name> CHARACTER SET utf8 COLLATE utf8mb4_0900_ai_ci;
change table collation:
ALTER TABLE <table_name> CONVERT TO CHARACTER SET utf8 COLLATE utf8mb4_0900_ai_ci;
change col...
What is the worst gotcha in C# or .NET? [closed]
...ds originally declared in the type it's looking at. Foo(int) overrides the base method, so isn't considered. Foo(object) is applicable, so overload resolution stops there. Odd, I know.
– Jon Skeet
Jul 8 '09 at 13:24
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C# binary literals
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Original Post
Since the topic seems to have turned to declaring bit-based flag values in enums, I thought it would be worth pointing out a handy trick for this sort of thing. The left-shift operator (<<) will allow you to push a bit to a specific binary position. Combine that with the a...
C# 5 async CTP: why is internal “state” set to 0 in generated code before EndAwait call?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Determine command line working directory when running node bin script
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How do I access command line arguments in Python?
...of elements passed through command line you can use len() to determine it. Based on this, you can design exception/error messages if user didn't pass specific number of parameters.
Also if you looking for a better way to handle command line arguments, I would suggest you look at https://docs.python...
Scroll back to the top of scrollable div
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Another way to do it with a smooth animation is like this
$("#containerDiv").animate({ scroll...
How do I get the time difference between two DateTime objects using C#?
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You want the TimeSpan struct:
TimeSpan diff = dateTime1 - dateTime2;
A TimeSpan object re...
How to set a Django model field's default value to a function call / callable (e.g., a date relative
... How does this work with migrations? Do all old objects get a date based on the time of migration? Is it possible to set a different default to be used with migrations?
– timthelion
Sep 7 '18 at 18:57
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