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How to redirect to a 404 in Rails?
...'d like to 'fake' a 404 page in Rails. In PHP, I would just send a header with the error code as such:
11 Answers
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What is the JavaScript convention for no operation?
...nction:
typeof Function.prototype === "function" // returns true
It can be invoked as a function and essentially does nothing as shown here:
setTimeout(function() {
console.log('Start: ', Date.now());
Function.prototype();
console.log('End : ', Date.now());
}, 100...
What to use instead of “addPreferencesFromResource” in a PreferenceActivity?
...preferences from a resource file. See the sample code here: PreferenceActivity
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HTML table headers always visible at top of window when viewing a large table
...heck out jQuery.floatThead (demos available) which is very cool, can work with DataTables too, and can even work inside an overflow: auto container.
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HTML5 check if audio is playing?
...lem) { return !audelem.paused; }
The Audio tag has a paused property. If it is not paused, then it's playing.
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How can I convert a string to a number in Perl?
I have a string which holds a decimal value in it and I need to convert that string into a floating point variable. So an example of the string I have is "5.45" and I want a floating point equivalent so I can add .1 to it. I have searched around the internet, but I only see how to convert a string t...
jQuery SVG vs. Raphael [closed]
...ughts:
Raphael
Pros: a good starter library, easy to do a LOT of things with SVG quickly. Well written and documented. Lots of examples and Demos. Very extensible architecture. Great with animation.
Cons: is a layer over the actual SVG markup, makes it difficult to do more complex things with SVG...
Why does ConcurrentHashMap prevent null keys and values?
...oncurrentMaps
(ConcurrentHashMaps, ConcurrentSkipListMaps) is that ambiguities that
may be just barely tolerable in non-concurrent maps can't be
accommodated. The main one is that if map.get(key) returns null, you
can't detect whether the key explicitly maps to null vs the key isn't
mapped...
Quickly find whether a value is present in a C array?
I have an embedded application with a time-critical ISR that needs to iterate through an array of size 256 (preferably 1024, but 256 is the minimum) and check if a value matches the arrays contents. A bool will be set to true is this is the case.
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How to check if an object is a list or tuple (but not string)?
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edited Apr 16 '18 at 14:21
sorin
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