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Efficient way to determine number of digits in an integer
...For added efficiency, if you know that your input numbers will be mostly small ones (I'm guessing less than 100,000), then reverse the tests: if (x < 10) return 1; if (x < 100) return 2; etc., so that the function will do less tests and exit faster.
– squelart
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What's a reliable way to make an iOS app crash?
...er performs a particular action that a real user is unlikely to do accidentally.
18 Answers
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Parse email content from quoted reply
...il from any quoted reply text that it might include. I've noticed that usually email clients will put an "On such and such date so and so wrote" or prefix the lines with an angle bracket. Unfortunately, not everyone does this. Does anyone have any idea on how to programmatically detect reply text...
C# Java HashMap equivalent
...ermits null values and the null key) download.oracle.com/javase/1.4.2/docs/api/java/util/…
– Fabio Maulo
Dec 25 '10 at 18:55
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Render basic HTML view?
...te.
Using express 3.0.0 and 3.1.0, the following works:
app.set('views', __dirname + '/views');
app.engine('html', require('ejs').renderFile);
See the comments below for alternative syntax and caveats for express 3.4+:
app.set('view engine', 'ejs');
Then you can do something like:
app.get('/...
MySQL Removing Some Foreign keys
...You can use this to find foreign key constraints: SELECT * FROM information_schema.table_constraints WHERE constraint_schema = '<your db name>' AND constraint_type = 'FOREIGN KEY'
– Gayan Dasanayake
Aug 26 '17 at 2:48
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Strip HTML from Text JavaScript
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@Magnus Smith: Yes, if whitespace is a concern - or really, if you have any need for this text that doesn't directly involve the specific HTML DOM you're working with - then you're better off using one of the other solutions given here. The primary advantages of this method are ...
Uncaught TypeError: undefined is not a function on loading jquery-min.js
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I'm trying to import the youtube iframe API, and it doesn't end in a semicolon, and I'm getting this error. I'm not concatenating it with anything... I'm loading it with jQuery.getScript(). So... Could this be what's causing my error? Or does that not make sense?
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How does Google's Page Speed lossless image compression work?
... image can be losslessly compressed, and provide a link to download this smaller image.
9 Answers
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Map implementation with duplicate keys
...ons-collections and Guava have several implementations for that. Multimaps allow for multiple keys by maintaining a collection of values per key, i.e. you can put a single object into the map, but you retrieve a collection.
If you can use Java 5, I would prefer Guava's Multimap as it is generics-aw...