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What's the difference between ES6 Map and WeakMap?

...e: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap): Keys of WeakMaps are of the type Object only. Primitive data types as keys are not allowed (e.g. a Symbol can't be a WeakMap key). Nor can a string, number, or boolean be used as a WeakMap key. A M...
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How do I configure different environments in Angular.js?

...nstant: { options: { name: 'config', wrap: '"use strict";\n\n{%= __ngModule %}', space: ' ' }, development: { options: { dest: '<%= yeoman.app %>/scripts/config.js' }, constants: { ENV: 'development' } }, production: { options: { des...
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“static const” vs “#define” vs “enum”

...alternative. If you really NEED to go with a macro (for example, you want __FILE__ or __LINE__), then you'd better name your macro VERY carefully: in its naming convention Boost recommends all upper-case, beginning by the name of the project (here BOOST_), while perusing the library you will notice...
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printf format specifiers for uint32_t and size_t

... Sounds like you're expecting size_t to be the same as unsigned long (possibly 64 bits) when it's actually an unsigned int (32 bits). Try using %zu in both cases. I'm not entirely certain though. ...
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How are feature_importances in RandomForestClassifier determined?

...ribute to the result to what extent. Therefore I am just using the feature_importances_ , which works well for me. 6 Answe...
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Python circular importing?

...if you set them up correctly. The easiest way to do so is to use import my_module syntax, rather than from my_module import some_object. The former will almost always work, even if my_module included imports us back. The latter only works if my_object is already defined in my_module, which in a cir...
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CSV API for Java [closed]

...nipulation of CSV cells. From http://super-csv.github.io/super-csv/examples_reading.html you'll find e.g. given a class public class UserBean { String username, password, street, town; int zip; public String getPassword() { return password; } public String getStreet() { return st...
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Windows batch: formatted date into variable

...at contain the individual parts, would be: for /f %%x in ('wmic path win32_localtime get /format:list ^| findstr "="') do set %%x set today=%Year%-%Month%-%Day% Much nicer than fiddling with substrings, at the expense of polluting your variable namespace. If you need UTC instead of local time, t...
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Forward function declarations in a Bash or a Shell script?

... This seems somewhat analogous to what if _ _ name _ _ == "_ _ main _ _": main() does in python – Sergiy Kolodyazhnyy Feb 13 '16 at 7:13 ...
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Missing include “bits/c++config.h” when cross compiling 64 bit program on 32 bit in Ubuntu

... While compiling in RHEL 6.2 (x86_64), I installed both 32bit and 64bit libstdc++-dev packages, but I had the "c++config.h no such file or directory" problem. Resolution: The directory /usr/include/c++/4.4.6/x86_64-redhat-linux was missing. I did the foll...