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Fastest way to check if a string matches a regexp in ruby?
...remove anchors, try limiting searches, use wildcards vs. explicit matches, etc.
The Fruity gem is very useful for quickly benchmarking things, because it's smart. Ruby's built-in Benchmark code is also useful, though you can write tests that fool you by not being careful.
I've used both in many an...
Differences between MySQL and SQL Server [closed]
...ftware as a whole, with GUI, handling requests locally and through network etc.
– Botond Bertalan
Oct 19 '16 at 9:08
...
Clearing purchases from iOS in-app purchase sandbox for a test user
...r changes to app state for this purchase,
// register in keychain, etc.
break ;
//.. other cases
}
}
}
The question of having your app logic / take back the purchase is simple: if you're caching purchases in keychain, delete your keychain. If you're doing it some ot...
Functional programming vs Object Oriented programming [closed]
...s very lightweight memory-speaking since most methods are just references. Etc...
– Erik Reppen
Nov 23 '13 at 0:55
...
boolean in an if statement
...on-zero number, any non-empty string value, any object or array reference, etc...
On the other hand:
if (booleanValue === true)
This will only satisfy the if condition if booleanValue is exactly equal to true. No other truthy value will satisfy it.
On the other hand if you do this:
if (someV...
if A vs if A is not None:
... And many other values too, such as empty list, empty set, empty tuple etc. Essentially, anything that is not truthy per docs.python.org/3/library/stdtypes.html#truth-value-testing.
– jarmod
Dec 4 '19 at 23:46
...
Replacement for “rename” in dplyr
...re is that data is copied. No big deal if this is for playing, i.e. mtcars etc ... but quite dramatic if you deal with substantial data. check dplyr:::changes(mtcars, dat)
– Romain Francois
Feb 2 '14 at 0:10
...
Rails 4 image-path, image-url and asset-url no longer work in SCSS files
.../cache/assets from your project directory and restart the server (webrick, etc.).
If that fails, you can also try just using background-image: url(logo.png); That will cause your CSS to look for files with the same relative path (which in this case is /assets).
...
Force browser to download image files on click
...uit your needs. You might be able to get the image mime-type (jpeg,png,gif,etc) with some more research if you needed to. There may be a way to do something similar to this with videos as well. Hope this helps someone!
Leeroy & Richard Parnaby-King:
UPDATE: As of spring 2018 this i...
Unique random string generation
...ures). Feel free to use as many cores, threads, synchronization primitives etc. as you like.
– Lucero
Nov 3 '16 at 11:54
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