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On design patterns: When should I use the singleton?
The glorified global variable - becomes a gloried global class. Some say breaking object-oriented design.
19 Answers
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Detecting an undefined object property
...ut it won’t throw an error!
}
So unless you’re doing feature detection², where there’s uncertainty whether a given name will be in scope (like checking typeof module !== 'undefined' as a step in code specific to a CommonJS environment), typeof is a harmful choice when used on a variable, and...
How can I use swift in Terminal?
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My example is from Swift 1.0 in July 2014. It was working without xcrun since ever for me.
– MacMark
Dec 31 '15 at 7:19
add a...
Where does npm install packages?
...herever you specified the npm root within the .npmrc file. However, in NPM 1.0+ modules are installed in two places. You can have modules installed local to your application in /.node_modules or you can have them installed globally which will use the above.
More information can be found at https://...
How can I override Bootstrap CSS styles?
...Dec 21 '13 at 17:04
Markus KottländerMarkus Kottländer
7,41033 gold badges3131 silver badges5757 bronze badges
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Equals(=) vs. LIKE
...duce results different from the = comparison operator:
mysql> SELECT 'ä' LIKE 'ae' COLLATE latin1_german2_ci;
+-----------------------------------------+
| 'ä' LIKE 'ae' COLLATE latin1_german2_ci |
+-----------------------------------------+
| 0 |
+------...
Using awk to remove the Byte-order mark
...t not UTF-16 files without a BOM) to UTF-8 without a BOM:
$ printf '\ufeffä\n'|iconv -f utf-8 -t utf-16be>bom-utf16be
$ printf '\ufeffä\n'|iconv -f utf-8 -t utf-16le>bom-utf16le
$ printf '\ufeffä\n'>bom-utf8
$ printf 'ä\n'|iconv -f utf-8 -t utf-16be>utf16be
$ printf 'ä\n'|iconv -f ...
Regex to match only letters
...r letters than A–Z, you can either add them to the character set: [a-zA-ZäöüßÄÖÜ]. Or you use predefined character classes like the Unicode character property class \p{L} that describes the Unicode characters that are letters.
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How many spaces will Java String.trim() remove?
...red Feb 4 '10 at 10:31
Juha SyrjäläJuha Syrjälä
30k3030 gold badges121121 silver badges171171 bronze badges
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YouTube iframe API: how do I control an iframe player that's already in the HTML?
...beIframeAPIReady() function is not invoked.
– Humppakäräjät
Feb 4 '15 at 18:21
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