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How can I validate a string to only allow alphanumeric characters in it?

...typically is A-Z, a-z and 0-9). This answer allows local characters like åäö. Update 2018-01-29 The syntax above only works when you use a single method that has a single argument of the correct type (in this case char). To use multiple conditions, you need to write like this: if (yourText.Al...
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Why does modern Perl avoid UTF-8 by default?

...=>"is",level => 1)->eq("d", " ð") is false. Similarly, "ae" and "æ" are eq if you don’t use locales, or if you use the English one, but they are different in the Icelandic locale. Now what? It’s tough, I tell you. You can play with ucsort to test some of these things out. Consider ...
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Is the LIKE operator case-sensitive with MSSQL Server?

In the documentation about the LIKE operator , nothing is told about the case-sensitivity of it. Is it? How to enable/disable it? ...
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How do I copy a string to the clipboard on Windows using Python?

...h Unicode characters too. I have tested characters ±°©©αβγθΔΨΦåäö to work on Win10 64-bit, with Python 3.5 and pyperclip 1.5.27. – np8 Jul 3 '16 at 15:55 ...
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HTML5 Canvas vs. SVG vs. div

What is the best approach for creating elements on the fly and being able to move them around? For example, let's say I want to create a rectangle, circle and polygon and then select those objects and move them around. ...
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Regular expression to match DNS hostname or IP Address?

... Non-latin (Punycoded) hostnames must be converted to ASCII form first (éxämplè.com = xn--xmpl-loa1ab.com) and then validated. – Alix Axel Jul 21 '13 at 8:36 6 ...
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Where can I download english dictionary database in a text format? [closed]

...purpose dictionary you can look up most words in. – Lèse majesté Dec 28 '12 at 2:50 2 The Objec...
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How to unescape HTML character entities in Java?

... @NickFrolov, your comments seem a bit messed up. auml is for instance ä and not д. – aioobe Oct 17 '16 at 1:52  |  show 3 more comments...
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How do I get user IP address in django?

... answered May 12 '11 at 9:38 SævarSævar 1,38788 silver badges1212 bronze badges ...
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How to find the statistical mode?

...ered Dec 14 '12 at 8:00 Rasmus BååthRasmus Bååth 3,62222 gold badges2121 silver badges2525 bronze badges ...