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What is the difference between Scala's case class and class?
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@Thomas: Correctly spoken, case classes deriving from sealed abstract classes mimic closed algebraic datatypes whereas the ADT is otherwise open.
– Dario
Feb 23 '10 at 13:02
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How to make rpm auto install dependencies
... Please re-read what I wrote. Any dependencies were downloaded from a repository, even if they were locally available in the directory with the RPM you installed.
– Aaron D. Marasco
May 9 '13 at 1:00
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Does VBA have Dictionary Structure?
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VBA does not have an internal implementation of a dictionary, but from VBA you can still use the dictionary object from MS Scripting Runtime Library.
Dim d
Set d = CreateObject("Scripting.Dictionary")
d.Add "a", "aaa"
d.Add "b", "bbb"
d.Add "c", "ccc"
If d.Exists("c") Then
MsgBox d("c...
Split Strings into words with multiple word boundary delimiters
... A common use case of string splitting is removing empty string entries from the final result. Is it possible to do that with this method? re.split('\W+', ' a b c ') results in ['', 'a', 'b', 'c', '']
– Scott Morken
Dec 6 '17 at 22:38
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List of Java class file format major version numbers?
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These come from the class version. If you try to load something compiled for java 6 in a java 5 runtime you'll get the error, incompatible class version, got 50, expected 49. Or something like that.
See here in byte offset 7 for more...
How do I print the type or class of a variable in Swift?
...yntax (e.g. println was replaced with print, toString() is now String()).
From the Xcode 6.3 release notes:
@nschum points out in the comments that the Xcode 6.3 release notes show another way:
Type values now print as the full demangled type name when used with
println or string interpolati...
How to make an HTTP request + basic auth in Swift
... have a RESTFull service with basic authentication and I want to invoke it from iOS+swift. How and where I must provide Credential for this request?
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Git keeps prompting me for a password
...ername and password and to retrieve the passphrase to your private SSH key from the keychain.
For Windows use:
git config --global credential.helper wincred
Troubleshooting
If the Git credential helper is configured correctly macOS saves the passphrase in the keychain. Sometimes the connection ...
Insert text with single quotes in PostgreSQL
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And if u want to escape s'tring from text column on insertion in case of procedural language etc, then you can use quote_literal(column_name) string function.
– alexglue
Apr 9 '14 at 9:59
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Express next function, what is it really for?
...route callback(s)." next(err) is used to jump to any "error middleware" (E from the post).
– Jonathan Lonowski
Oct 30 '12 at 7:53
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