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List vs List
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The difference is that, for example, a
List<HashMap<String,String>>
is a
List<? extends Map<String,String>>
but not a
List<Map<String,String>>
So:
void withWilds( List<? extends Map<String,String>...
How to download a file from server using SSH? [closed]
...local/dir
replacing the username, host, remote filename, and local directory as appropriate.
If you want to access EC2 (or other service that requires authenticating with a private key), use the -i option:
scp -i key_file.pem your_username@remotehost.edu:/remote/dir/foobar.txt /local/dir
From:...
WCF chokes on properties with no “set ”. Any workaround?
... Thanks, glad it was useful! This actually is just one of several uses for this trick. Since getters and setters are technically functions, you can also use this same technique to provide custom serialization of primitive types (perhaps a custom time format in XML) without needing to wield the i...
gitignore does not ignore folder
... folder. Inside the foo folder I have a bar folder. I would like to ignore all changes to all files inside my bar folder. I have this in my gitignore :
...
Convert a Unicode string to a string in Python (containing extra symbols)
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See unicodedata.normalize
title = u"Klüft skräms inför på fédéral électoral große"
import unicodedata
unicodedata.normalize('NFKD', title).encode('ascii', 'ignore')
'Kluft skrams infor pa federal electoral groe'
...
How to lock compiled Java classes to prevent decompilation?
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Some of the more advanced Java bytecode obfuscators do much more than just class name mangling. Zelix KlassMaster, for example, can also scramble your code flow in a way that makes it really hard to follow and works as an excellent code o...
Passing additional variables from command line to make
...an I pass variables to a GNU Makefile as command line arguments? In other words, I want to pass some arguments which will eventually become variables in the Makefile.
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In C#, why is String a reference type that behaves like a value type?
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Strings aren't value types since they can be huge, and need to be stored on the heap. Value types are (in all implementations of the CLR as of yet) stored on the stack. Stack allocating strings would break all sorts of things: the stack is only 1MB for 32-bit and 4MB for 64-bit, you'd have to...
Does Swift support reflection?
Does Swift support reflection? e.g. is there something like valueForKeyPath: and setValue:forKeyPath: for Swift objects?
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Javascript - removing undefined fields from an object [duplicate]
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A one-liner using ES6 arrow function and ternary operator:
Object.keys(obj).forEach(key => obj[key] === undefined ? delete obj[key] : {});
Or use short-circuit evaluation instead of ternary: (@Matt Langlois, thanks for the info!)
Object.keys(obj).forEach(key => obj[key]...