square-bracket - w3toppers.com

Copy file with square brackets [ ] in the filename and use * wildcard

In this situation, you have to use double-backticks with single quotes in order to escape the brackets. You can also use quadruple backticks when you use double quoted strings. So the fixed line of code is: Copy-item -Path $FSG\$SW\0.RoomView.Notes\starter\’“[RoomView“] Versions explained*.pdf’ -Destination $FSG\$containerFolder\$rootFolder\’Fusion Server’\ Another good resource on file paths and wired characters etc. is … Read more

List of all unicode’s open/close brackets?

There is a plain-text database of information about every Unicode character available from the Unicode Consortium; the format is described in Unicode Annex #44. The primary information is contained in UnicodeData.txt. Open and close punctuation characters are denoted with Ps (punctuation start) and Pe (punctuation end) in the General_Category field (the third field, delimited by … Read more

Dot and Square Bracket Notation

In dot notation, the name after the dot is the name of the property being referenced. So: var foo = “bar”; var obj = { foo: 1, bar: 2 }; console.log(obj.foo) // = 1, since the “foo” property of obj is 1, // independent of the variable foo However, in square-bracket notation, the name of … Read more

PHP Difference between array() and []

Following [] is supported in PHP >= 5.4: [‘name’ => ‘test’, ‘id’ => ‘theID’] This is a short syntax only and in PHP < 5.4 it won’t work.

Are square brackets permitted in URLs?

RFC 3986 states A host identified by an Internet Protocol literal address, version 6 [RFC3513] or later, is distinguished by enclosing the IP literal within square brackets (“[” and “]”). This is the only place where square bracket characters are allowed in the URI syntax. So you should not be seeing such URI’s in the … Read more

Does a dot have to be escaped in a character class (square brackets) of a regular expression?

In a character class (square brackets) any character except ^, -, ] or \ is a literal. This website is a brilliant reference and has lots of info on the nuances of different regex flavours. http://www.regular-expressions.info/refcharclass.html

Accessing arrays by index[array] in C and C++

Yes. 6.5.2.1 paragraph 1 (C99 standard) describes the arguments to the [] operator: One of the expressions shall have type “pointer to object type“, the other expression shall have integer type, and the result has type “type“. 6.5.2.1 paragraph 2 (emphasis added): A postﬁx expression followed by an expression in square brackets [] is a … Read more

When are square brackets required in a Bash if statement?

The square brackets are a synonym for the test command. An if statement checks the exit status of a command in order to decide which branch to take. grep -q “$text” is a command, but “$name” = ‘Bob’ is not–it’s just an expression. test is a command, which takes an expression and evaluates it: if … Read more

Perl: Meaning of double squared brackets after a string?

It means you’re working with a two dimensional array. #!/usr/bin/env perl use strict; use warnings; my @stuff = ( [ 1, 2, 3, 4 ], [ 5, 6, 7, 8 ], ); print $stuff[1][2]; #prints ‘7’