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What does 'require: false' in Gemfile mean?
...probably it does more requires of its own. Even if you require 'yaml', you now have the YAML module as an object in memory.
– Nathan Long
Oct 17 '13 at 19:31
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Downcasting shared_ptr to shared_ptr?
...cast, and you wish you could have a little bit of both worlds. It is well known that dynamic_cast has a runtime overhead, but it is safer, whereas static_cast has no overhead at all, but it may fail silently. How nice it would be if you could use shared_dynamic_cast in debug builds, and shared_stati...
PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
...yes nice but overkill, especially considering it is pretty much deprecated now for php 5.7
– Andrew
Mar 21 '16 at 17:30
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How can I tell PyCharm what type a parameter is expected to be?
...documentation format for methods and their parameters so that PyCharm can know the type. Recent PyCharm version supports most common doc formats.
For example, PyCharm extracts types from @param style comments.
See also reStructuredText and docstring conventions (PEP 257).
Another option is Python...
Passing an Array as Arguments, not an Array, in PHP
...ereferencing the array into the standard func($arg1, $arg2) manner. But now I'm lost on how to do it. I recall the manner of passing by reference, how to "glob" incoming parameters ... but not how to de-list the array into a list of arguments.
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What does middleware and app.use actually mean in Expressjs?
... a late answer to add something not mentioned in the previous answers.
By now it should be clear that middleware is/are function(s) run between the client request and the server answer. The most common middleware functionality needed are error managing, database interaction, getting info from stati...
Commands executed from vim are not recognizing bash command aliases
... it loads ~/.zshenv for all shells, so I moved my alias setup there and it now works from within Vim. See man zsh (or your shell's man pages) for more.
– Nathan Long
Feb 8 '14 at 22:52
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With bash, how can I pipe standard error into another process?
It's well known how to pipe the standard ouput of a process into another processes standard input:
5 Answers
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When should I use std::thread::detach?
Sometime I have to use std::thread to speed up my application. I also know join() waits until a thread completes. This is easy to understand, but what's the difference between calling detach() and not calling it?
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Unicode, UTF, ASCII, ANSI format differences
...e encoded as surrogate pairs. These used to be relatively rarely used, but now many consumer applications will need to be aware of non-BMP characters in order to support emojis.
UTF-8: Variable length encoding, 1-4 bytes per code point. ASCII values are encoded as ASCII using 1 byte.
UTF-7: Usually ...