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const vs constexpr on variables
... PI2 are constant, meaning you can not modify them. However only PI2 is a compile-time constant. It shall be initialized at compile time. PI1 may be initialized at compile time or run time. Furthermore, only PI2 can be used in a context that requires a compile-time constant. For example:
const...
How do I import .sql files into SQLite 3?
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sqlite3 DB.db < db.sql Error: incomplete SQL: create table server(name varchar(50),ipaddress varchar(15),id init) create table client(name varchar(50),ipaddress varchar(15),id init) what's this error mean? I tried both methods >.read db.sql and sqlite3 D...
os.path.dirname(__file__) returns empty
...lename
Both dirname() and basename() only split the passed filename into components without taking into account the current directory. If you want to also consider the current directory, you have to do so explicitly.
To get the dirname of the absolute path, use
os.path.dirname(os.path.abspath(_...
How do I create a Python function with optional arguments?
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273
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How do I test for an empty string in a Bash case statement?
...t matches.
So the empty string is written, as usual, as "" or '':
case "$command" in
"") do_empty ;;
something) do_something ;;
prefix*) do_prefix ;;
*) do_other ;;
esac
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In Python, how to display current time in readable format
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40
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Convert a list of objects to an array of one of the object's properties
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19
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Difference between Activity and FragmentActivity
... Package.
The FragmentActivity class adds a couple new methods to ensure compatibility with older versions of Android, but other than that, there really isn't much of a difference between the two. Just make sure you change all calls to getLoaderManager() and getFragmentManager() to getSupportLoade...
How do you tell Resharper that a method parameter is a string containing a CSS class?
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Ansible: Set variable to file content
...aveat: This lookup will work with local files, not remote files.
Here's a complete example from the docs:
- hosts: all
vars:
contents: "{{ lookup('file', '/etc/foo.txt') }}"
tasks:
- debug: msg="the value of foo.txt is {{ contents }}"
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