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Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
...w { |h, k| h[k] = [] } if you want the most idiomatic solution and don’t care why.
What doesn’t work
Why Hash.new([]) doesn’t work
Let’s look more in-depth at why Hash.new([]) doesn’t work:
h = Hash.new([])
h[0] << 'a' #=> ["a"]
h[1] << 'b' #=> ["a", "b"]
h[1] ...
Why and How to avoid Event Handler memory leaks?
I just came to realize, by reading some questions and answers on StackOverflow, that adding event handlers using += in C# (or i guess, other .net languages) can cause common memory leaks...
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Better explanation of when to use Imports/Depends
...h path (i.e. the list of environments returned by search()). This strategy can, however, be thwarted if another package, loaded later, places an identically named function earlier on the search path. Chambers (in SoDA) uses the example of the function "gam", which is found in both the gam and mgcv ...
What column type/length should I use for storing a Bcrypt hashed password in a Database?
... depend solely on the byte value but on the actual collation; in the worst case A is treated as equal to a. See The _bin and binary Collations for more information.
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Named colors in matplotlib
What named colors are available in matplotlib for use in plots? I can find a list on the matplotlib documentation that claims that these are the only names:
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REST, HTTP DELETE and parameters
...'m modelling the "Are you sure you want to delete that?" scenario. In some cases, the state of the resource suggests that the requested delete may be invalid. You can probably imagine some scenarios yourself where confirmation of a delete is required
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Forking vs. Branching in GitHub
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You cannot always make a branch or pull an existing branch and push back to it, because you are not registered as a collaborator for that specific project.
Forking is nothing more than a clone on the GitHub server side:
withou...
How to create a shared library with cmake?
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set_target_properties(mylib PROPERTIES VERSION ${PROJECT_VERSION})
You can also set SOVERSION to a major number of VERSION. So libmylib.so.1 will be a symlink to libmylib.so.1.0.0.
set_target_properties(mylib PROPERTIES SOVERSION 1)
Declare public API of your library. This API will be install...
Cmake vs make sample codes?
...f commands for each type of target. Therefore, there
is no explicit specification of commands like $(CC) ..., $(RANLIB) ... and so on.
All usual compiler/linker flags dealing with inclusion of header files, libraries, etc.
are replaced by platform independent / build system independent commands.
D...
How can you use an object's property in a double-quoted string?
..."$($bar.Length)" # yields "3"
PowerShell only expands variables in those cases, nothing more. To force evaluation of more complex expressions, including indexes, properties or even complete calculations, you have to enclose those in the subexpression operator $( ) which causes the expression insid...