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What JSON library to use in Scala? [closed]
...:
import com.owlike.genson.defaultGenson_
val json = toJson(Person(Some("foo"), 99))
val person = fromJson[Person]("""{"name": "foo", "age": 99}""")
case class Person(name: Option[String], age: Int)
Disclaimer: I am Gensons author, but that doesn't meen I am not objective :)
...
Using std Namespace
...dant lookup (aka ADL or Koenig lookup):
template< typename T >
void foo( T& x, T& y)
{
using std::swap; // makes std::swap available in this function
// do stuff...
swap( x, y); // will use a T-specific swap() if it exists,
// otherw...
When to use -retainCount?
...1] would have a retainCount of 1. It doesn't. It's 2.
You'd think that @"Foo" would have a retainCount of 1. It doesn't. It's 1152921504606846975.
You'd think that [NSString stringWithString:@"Foo"] would have a retainCount of 1. It doesn't. Again, it's 1152921504606846975.
Basically, since ...
Is it possible only to declare a variable without assigning any value in Python?
...ually going to assign to or use them. I think what you want to do is just
foo = None
which will assign the value None to the variable foo.
EDIT: What you really seem to want to do is just this:
#note how I don't do *anything* with value here
#we can just start using it right inside the loop
fo...
How to test if string exists in file with Bash?
...string matches an entire line, not just a part of it: so if you search for foo, only lines containing exactly foo are matched, not foobar. (There was an error in my examples; it still used some regex syntax. Fixed now.)
– Thomas
Jan 24 '11 at 17:04
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How to go to each directory and execute a command?
...ommands don't actually care in which directory you execute them. for f in foo bar; do cat "$f"/*.txt; done >output is functionally equivalent to cat foo/*.txt bar/*.txt >output. However, ls is one command that does produce slightly different output depending on how you pass it arguments; sim...
How to get “their” changes in the middle of conflicting Git rebase?
...
You want to use:
git checkout --ours foo/bar.java
git add foo/bar.java
If you rebase a branch feature_x against master (i.e. running git rebase master while on branch feature_x), during rebasing ours refers to master and theirs to feature_x.
As pointed out in...
twig: IF with multiple conditions
... to wrap individual expressions in parentheses to avoid confusion:
{% if (foo and bar) or (fizz and (foo + bar == 3)) %}
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How to convert a byte array to a hex string in Java?
...st this type of work.
import org.apache.commons.codec.binary.Hex;
String foo = "I am a string";
byte[] bytes = foo.getBytes();
System.out.println( Hex.encodeHexString( bytes ) );
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Why do you need to put #!/bin/bash at the beginning of a script file?
...n question when you try to execute it. So, if you try to run a file called foo.sh which has #!/bin/bash at the top, the actual command that runs is /bin/bash foo.sh. This is a flexible way of using different interpreters for different programs. This is something implemented at the system level and t...