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-- Create simple index CREATE INDEX index_name ON table_name(column_name1 [, column_name2, ...]) -- Create unique index CREATE UNIQUE INDEX index_name ON table_name(column_name1 [, column_name2, ...] -- Drop index DROP INDEX index_name ON tbl_name [algorithm_option | lock_option] ....

Perfect forwarding requires forwarding references in order to preserve the ref-qualifiers of the arguments. Such references appear only in a deduced context. That is: template<class T> void f(T&& x) // x is a forwarding reference, because T is deduced from a call to f() { g(s...

VersionMajor ChangesRelease Date3.02004-06-183.7.11SELECT max(x), y2012-03-203.8.3CTEs2014-02-11

Environment variables in dynamic inventory won't work, f.e. "ansible_ssh_private_key_file": $HOME/.ssh/key.pem" If the dynamic inventory server side passes $HOME for example, replace the variable in the client code (Python): json_input.replace("$HOME", os.environ.get(...

Rust uses Result<T, E> values to indicate recoverable errors during execution. Unrecoverable errors cause Panics which is a topic of its own. Details of error handling is described in The Rust Programming Language (a.k.a The Book)

ParameterExplanationansible_connectionConnection type to the host. This can be the name of any of ansible’s connection plugins. SSH protocol types are smart, ssh or paramiko. The default is smart. Non-SSH based types are described in the next section.ansible_hostThe name of the host to connect to, ...

typing.Callable[[int, str], None] -> def func(a: int, b: str) -> None typing.Mapping[str, int] -> {"a": 1, "b": 2, "c": 3} typing.List[int] -> [1, 2, 3] typing.Set[int] -> {1, 2, 3} typing.Optional[int] -> None or int typing.Sequence[int] ->...

Umbraco is an open source, MIT-Licensed .NET content management system. Initially created by Danish developer Niels Hartvig in 2000 as a hobby project, Umbraco was released as open source in 2004 and has since been developed and maintained continuously by a core team made up of paid Umbraco employ...

Silverstripe is an open source PHP content management system. A developer might want to use it because BSD License - meaning it can be rebranded as your own application Clean Object Oriented code very easy to understand and use - along with extend and customise Simple and powerful template en...

This section provides an overview of what razor is, and why a developer might want to use it. It should also mention any large subjects within razor, and link out to the related topics. Since the Documentation for razor is new, you may need to create initial versions of those related topics. ...

Web scraping is an automated, programmatic process through which data can be constantly 'scraped' off webpages. Also known as screen scraping or web harvesting, web scraping can provide instant data from any publicly accessible webpage. On some websites, web scraping may be illegal. Useful P...

A makefile is a text file which controls the operation of the make program. The make program is typically used to manage the creation of programs from their source files, but it can be more generally used to handle any process where files (or targets) need to be regenerated after other files (or ...

Devise is a very powerful gem, it allows you to sign up, sign in and sign out options just after installing. Moreover user can add authentications and restrictions to its applications. Devise also come with its own views, if user wants to use. A user can also customize sign up and sign in forms acco...