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Ruby on Rails Server options [closed]
...confuses me. There are WEBrick, Mongrel, Passenger, Apache, Nginx and many more I am sure, and I don't really understand the different roles they play.
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How does C compute sin() and other math functions?
...lor series. However, this is only accurate near 0, so...
When the angle is more than about 7°, a different algorithm is used, computing Taylor-series approximations for both sin(x) and cos(x), then using values from a precomputed table to refine the approximation.
When |x| > 2, none of the above...
Should I use multiplication or division?
... faster to multiply than to divide, but as you get closer to the CPU using more advanced VMs or JITs, the advantage disappears. It's quite possible that a future Python VM would make it irrelevant
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How to check whether a string is Base64 encoded or not
...th '=' characters.
^([A-Za-z0-9+/]{4})* means the string starts with 0 or more base64 groups.
([A-Za-z0-9+/]{4}|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)$ means the string ends in one of three forms: [A-Za-z0-9+/]{4}, [A-Za-z0-9+/]{3}= or [A-Za-z0-9+/]{2}==.
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Ruby: Easiest Way to Filter Hash Keys?
... The counterpart to .select is .reject, if that makes your code more idiomatic.
– Joe Atzberger
Aug 20 '16 at 1:23
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What is the garbage collector in Java?
...hich gets rid of objects which are not being used by a Java application anymore. It is a form of automatic memory management.
When a typical Java application is running, it is creating new objects, such as Strings and Files, but after a certain time, those objects are not used anymore. For example,...
On design patterns: When should I use the singleton?
...ators and client side UI's also being possibly "acceptable" choices.
Read more at Singleton I love you, but you're bringing me down.
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How to count the number of occurrences of an element in a List
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This is not what was asked for. It does more work than necessary.
– Alex Worden
Oct 4 '17 at 3:09
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Why do Java programmers like to name a variable “clazz”? [closed]
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It's hard to agree that "clazz" is more clear than "_class" or "myClass". If I'd seen "_class" in code, the intent would have been more obvious than a non-word that sent me to Google (and to this page).
– uscjeremy
Jul 10...
Use of alloc init instead of new
...ew doesn't support custom initializers (like initWithString)
alloc-init is more explicit than new
General opinion seems to be that you should use whatever you're comfortable with.
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