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Rails new vs create
...ated differently.
An HTTP GET to /resources/new is intended to render a form suitable for creating a new resource, which it does by calling the new action within the controller, which creates a new unsaved record and renders the form.
An HTTP POST to /resources takes the record created as part of...
What happens to a github student account's repositories at the end of 2 years?
... using my university email address. I'm planning to use the private repositories for some class projects this semester, but I'm wondering what will happen to those repositories at the end of 2 years when my free student upgrade expires. I'm assuming it's the same thing that happens when you downgrad...
CSS content generation before or after 'input' elements [duplicate]
In Firefox 3 and Google Chrome 8.0 the following works as expected:
5 Answers
5
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Why is semicolon allowed in this python snippet?
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It's useful for things like timeit a = 5; a*a
– endolith
May 23 '13 at 19:00
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Detect if device is iOS
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Detecting iOS
With iOS 13 iPad both User agent and platform strings are changed and differentiating between iPad and MacOS seems possible, so all answers below needs to take that into account now.
This might be the shortest alternative that also covers iOS 13:
function iOS() {
r...
Is “argv[0] = name-of-executable” an accepted standard or just a common convention?
When passing argument to main() in a C or C++ application, will argv[0] always be the name of the executable? Or is this just a common convention and not guaranteed to be true 100% of the time?
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SQLite INSERT - ON DUPLICATE KEY UPDATE (UPSERT)
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Since 3.24.0 SQLite also supports upsert, so now you can simply write the following
INSERT INTO visits (ip, hits)
VALUES ('127.0.0.1', 1)
ON CONFLICT(ip) DO UPDATE SET hits = hits + 1;
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Open an IO stream from a local file or url
...nguages that can take a string that contains either a path to a local file or a url and open it as a readable IO stream.
1...
Pandoc markdown page break
...good alternative to LaTeX, as my document does not have many mathematical formulas, and I do not have ANY experience with LaTeX, which combined with less than 2 week submission deadline makes it a good solution.
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Why does changing 0.1f to 0 slow down performance by 10x?
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Welcome to the world of denormalized floating-point! They can wreak havoc on performance!!!
Denormal (or subnormal) numbers are kind of a hack to get some extra values very close to zero out of the floating point representation. Operations ...