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JavaScript plus sign in front of function expression
... the parser to treat the part following the + as an expression. This is usually used for functions that are invoked immediately, e.g.:
+function() { console.log("Foo!"); }();
Without the + there, if the parser is in a state where it's expecting a statement (which can be an expression or several n...
Git reset --hard and push to remote repository
...with --force:
user@local$ git push origin +master:master --force
And finally revert the server's setting in the original protected state:
user@remote$ git config receive.denyNonFastforwards true
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How can I make my flexbox layout take 100% vertical space?
...he parent "flex-direction" is a "row", its child "flex-grow" works horizontally.
2: When the parent "flex-direction" is "columns", its child "flex-grow" works vertically.
Hope this helps
Daniel
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How to use XPath contains() here?
...that this:
//ul[@class='featureList' and contains(li, 'Type')]
would actually select a node!
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Why does Popen.communicate() return b'hi\n' instead of 'hi'?
...code('ascii'))
hi
Of course, this specific example only works if you actually are receiving ASCII from the subprocess. If it's not ASCII, you'll get an exception:
>>> print(b'\xff'.decode('ascii'))
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
Unic...
how to permit an array with strong parameters
...ermit expects each argument to be a Hash or a Symbol. Ruby magic will turn all key value pairs s at the end of a method call into one hash, but Ruby won't know what to do if you mix symbols with key/value pairs in your method call.
– sameers
Nov 20 '13 at 0:05
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How to properly check if std::function is empty in C++11?
...'re not checking for an empty lambda, but whether the std::function has a callable target stored in it. The check is well-defined and works because of std::function::operator bool which allows for implicit conversion to bool in contexts where boolean values are required (such as the conditional expr...
Is #pragma once part of the C++11 standard?
Traditionally, the standard and portable way to avoid multiple header inclusions in C++ was/is to use the #ifndef - #define - #endif pre-compiler directives scheme also called macro-guard scheme (see code snippet below).
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Cloning a MySQL database on the same MySql instance
...s contain the nice tool mysqldbcopy which by default copies a DB including all related objects (“tables, views, triggers, events, procedures, functions, and database-level grants”) and data from one DB server to the same or to another DB server. There are lots of options available to customize w...
The resulting API analysis is too large when upload app to mac store
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Apple forbids using private or undocumented APIs in iOS apps. Any calls you make to methods that have the same name as private or undocumented API methods will be flagged as a private API use, even if the method being called is something you have defined yourself.
App Loader does an initial...