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Is there a TRY CATCH command in Bash
...to check that a terminal app has been installed. I want to use a TRY/CATCH command to do this unless there is a neater way.
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Accessing an SQLite Database in Swift
...er and get a bit familiar with Swift in the process. You can find it here: https://github.com/chrismsimpson/SwiftSQLite.
var db = SQLiteDatabase();
db.open("/path/to/database.sqlite");
var statement = SQLiteStatement(database: db);
if ( statement.prepare("SELECT * FROM tableName WHERE Id = ?") !=...
What does = +_ mean in JavaScript
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95
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Can't find the 'libpq-fe.h header when trying to install pg gem
...l-9.3/bin/p* /usr/local/bin. I installed postgres 9.3 like so: yum install http://yum.postgresql.org/9.3/redhat/rhel-6-x86_64/pgdg-redhat93-9.3-1.noarch.rpm && yum install postgresql93 postgresql93-contrib postgresql93-server postgresql93-devel
– JoePasq
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How to have stored properties in Swift, the same way I had on Objective-C?
...above because it doesn't require any global variables. I got it from here:
http://nshipster.com/swift-objc-runtime/
The gist is that you use a struct like so:
extension UIViewController {
private struct AssociatedKeys {
static var DescriptiveName = "nsh_DescriptiveName"
}
var ...
What's a correct and good way to implement __hash__()?
...small tuples is specially optimized, and it pushes the work of getting and combining hashes to C builtins, which is typically faster than Python level code.
– ShadowRanger
Nov 4 '19 at 23:18
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Installing python module within code
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The officially recommended way to install packages from a script is by calling pip's command-line interface via a subprocess. Most other answers presented here are not supported by pip. Furthermore since pip v10, all code has been moved to pi...
'typeid' versus 'typeof' in C++
...gives information about the runtime type of the value.
typeof Reference: http://www.delorie.com/gnu/docs/gcc/gcc_36.html
typeid Reference: https://en.wikipedia.org/wiki/Typeid
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How do you round a float to two decimal places in jruby
...mber almost any way you like, and lots more.
Full sprintf documentation: http://www.ruby-doc.org/core-2.0.0/Kernel.html#method-i-sprintf
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Convert a PHP object to an associative array
...Output:
array(2) {
'foo' => int(1)
'bar' => int(2)
}
Example: Complex Object
class Foo
{
private $foo;
protected $bar;
public $baz;
public function __construct()
{
$this->foo = 1;
$this->bar = 2;
$this->baz = new StdClass;
}
}
...