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What does the thread_local mean in C++11?
...bal/static variables can be accessed by all the threads (possibly synchronized access using locks). And the thread_local variables are visible to all the threads but can only modified by the thread for which they are defined? Is it correct?
...
Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
...s immutable, we could use Hash.new([]) just fine too:
h = Hash.new([].freeze)
h[0] += ['a'] #=> ["a"]
h[1] += ['b'] #=> ["b"]
h[2] #=> []
h #=> {0=>["a"], 1=>["b"]}
However, note that ([].freeze + [].freeze).frozen? == false. So, if you want to ensure th...
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
..." is safer than "Depends" (and also makes a package using it a 'better citizen' with respect to other packages that do use "Depends").
A "Depends" directive attempts to ensure that a function from another package is available by attaching the other package to the main search path (i.e. the list of ...
Named colors in matplotlib
...en(sorted_names)
ncols = 4
nrows = n // ncols
fig, ax = plt.subplots(figsize=(12, 10))
# Get height and width
X, Y = fig.get_dpi() * fig.get_size_inches()
h = Y / (nrows + 1)
w = X / ncols
for i, name in enumerate(sorted_names):
row = i % nrows
col = i // nrows
y = Y - (row * h) - h
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Delete element in a slice
...nquake
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answered Jul 29 '14 at 21:47
davedave
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REST, HTTP DELETE and parameters
...EMicE
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Forking vs. Branching in GitHub
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How to create a shared library with cmake?
...does not provide attended mastery of the compilation process. If you are lazy, copy-paste output of ls -1 sources/*.cpp :
add_library(mylib SHARED
sources/animation.cpp
sources/buffers.cpp
[...]
)
Set VERSION property (optional but it is a good practice):
set_target_properties(mylib ...
Python how to write to a binary file?
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