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Regular Expression to reformat a US phone number in Javascript

... ' + match[2] + '-' + match[3] } return null } Here's a version that allows the optional +1 international code: function formatPhoneNumber(phoneNumberString) { var cleaned = ('' + phoneNumberString).replace(/\D/g, '') var match = cleaned.match(/^(1|)?(\d{3})(\d{3})(\d{4})$/) if (match) ...
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mysqldump - Export structure only without autoincrement

.../g' > <filename>.sql (this only works if you have GUI Tools installed: mysqldump --skip-auto-increment) New UPDATE thanks to comments. The \b is useless and sometimes will break the command. See this SO topic for explanations. So the optimized answer would be : mysqldump -u root -p -h ...
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Fundamental difference between Hashing and Encryption algorithms

...tions They provide a mapping between an arbitrary length input, and a (usually) fixed length (or smaller length) output. It can be anything from a simple crc32, to a full blown cryptographic hash function such as MD5 or SHA1/2/256/512. The point is that there's a one-way mapping going on. It's a...
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How best to determine if an argument is not sent to the JavaScript function

...noid (see comments). Using the || operator has become standard practice - all the cool kids do it - but be careful: The default value will be triggered if the argument evaluates to false, which means it might actually be undefined, null, false, 0, '' (or anything else for which Boolean(...) returns...
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git remote prune – didn't show as many pruned branches as I expected

... When you use git push origin :staleStuff, it automatically removes origin/staleStuff, so when you ran git remote prune origin, you have pruned some branch that was removed by someone else. It's more likely that your co-workers now need to run git prune to get rid of branches you...
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Oracle: If Table Exists

...her reason (that might be important) the exception is still raised to the caller: BEGIN EXECUTE IMMEDIATE 'DROP TABLE ' || table_name; EXCEPTION WHEN OTHERS THEN IF SQLCODE != -942 THEN RAISE; END IF; END; ADDENDUM For reference, here are the equivalent blocks for other...
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Why doesn't nodelist have forEach?

... NodeList now has forEach() in all major browsers See nodeList forEach() on MDN. Original answer None of these answers explain why NodeList doesn't inherit from Array, thus allowing it to have forEach and all the rest. The answer is found on this es-discus...
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Difference between Static and final?

...he initialization of any instance variables. A single copy to be shared by all instances of the class. A static variable can be accessed directly by the class name and doesn’t need any object. Syntax: Class.variable Static method It is a method which belongs to the class and not to the objec...
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Bootstrap modal appearing under background

...tive position this behavior will occur. Make sure the modal container and all of its parent elements are positioned the default way to fix the problem. Here are a couple ways to do this: Easiest way is to just move the modal div so it is outside any elements with special positioning. One good p...
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MySQL SELECT only not null values

...hough... SELECT val1 AS val FROM your_table WHERE val1 IS NOT NULL UNION ALL SELECT val2 FROM your_table WHERE val2 IS NOT NULL /*And so on for all your columns*/ The disadvantage of the above is that it scans the table multiple times once for each column. That may possibly be avoided by the b...