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How to clone a case class instance and change just one field in Scala?
...ed on current value.
val newPersona2 = messageLens.modify(existingPersona)(_ + "iPad")
// Results:
// newPersona1: Persona(store,apple,Set())
// newPersona2: Persona(store,apple,Set(iPhone, iPad))
Moreover, in case you have nested case classes, the getter and setter methods can be a bit tedious t...
How to find the type of an object in Go?
...that you can get rid of variable t, so t := v.(type) becomes v.(type), and _ = t is no longer needed.
– Akavall
Feb 28 '17 at 6:21
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Mockito. Verify method arguments
...ckito.verify(mock).mymethod(null);
Mockito.verify(mock).mymethod("something_else");
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Code for decoding/encoding a modified base64 URL
... s.Replace('+', '-'); // 62nd char of encoding
s = s.Replace('/', '_'); // 63rd char of encoding
return s;
}
static byte[] Base64UrlDecode(string arg)
{
string s = arg;
s = s.Replace('-', '+'); // 62nd char of encoding
s = s.Replace('_', '/'); // ...
How to remove item from array by value? [duplicate]
....js. It really makes things simple.
For example, with this:
var result = _.without(['three','seven','eleven'], 'seven');
And result will be ['three','eleven'].
In your case the code that you will have to write is:
ary = _.without(ary, 'seven')
It reduces the code that you write.
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Query EC2 tags from within instance
...Name of your current ec2 instance (the value of the "Name" tag). Modify TAG_NAME to your specific case.
TAG_NAME="Name"
INSTANCE_ID="`wget -qO- http://instance-data/latest/meta-data/instance-id`"
REGION="`wget -qO- http://instance-data/latest/meta-data/placement/availability-zone | sed -e 's:\([0-9...
Gradle, “sourceCompatibility” vs “targetCompatibility”?
...
if(JavaVersion.current() != JavaVersion.VERSION_1_8) throw new GradleException("This project requires Java 8, but it's running on "+JavaVersion.current()) This is how I sort this issue out, right in the beginning of the build.gradle file.
– Xerus
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Is returning by rvalue reference more efficient?
...
Beta_ab&&
Beta::toAB() const {
return move(Beta_ab(1, 1));
}
This returns a dangling reference, just like with the lvalue reference case. After the function returns, the temporary object will get destructed. You sho...
SQLite table constraint - unique on multiple columns
...t method, and not the insertWithOnConflict with the SQLiteDatabase.CONFLICT_REPLACE flag?
– Oleg Belousov
Jan 25 '14 at 16:23
3
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Easiest way to toggle 2 classes in jQuery
... with the other on (say..) the container. You can guess the other by using _.without() on the array:
$mycontainer.removeClass(_.without(types, type)[0]).addClass(type);
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