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Unique Key constraints for multiple columns in Entity Framework
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@JJS - I got it to work where one of the properties was a foreign key.. by any chance is your key a varchar or nvarchar? There is a limit to the length of which can be used as a unique key.. stackoverflow.com/questions/2863993/…
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Should __init__() call the parent class's __init__()?
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If you need something from super's __init__ to be done in addition to what is being done in the current class's __init__, you must call it yourself, since that will not happen automatically. But if you don't need anything from super's __init__, no need to call it. Example:
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Regex Last occurrence?
...f) Also, your example on RegExr uses two backslashes to separate path components; there should be only one, and the regex should match only one. (demo)
– Alan Moore
Jul 9 '16 at 4:11
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How do you design object oriented projects? [closed]
...d taking a course on object oriented design in Java. There is an excellent one published on UDEMY udemy.com/mastering-object-oriented-design-in-java/…. I think that can certainly help you. Another great resource is to try the ATM object oriented problem. You can google that.
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Why should eval be avoided in Bash, and what should I use instead?
...printf "$1\n" "${@:2}"
}
function error
{
# Send the first element as one argument, and the rest of the elements as a combined argument.
# Arguments to println:
# 1 -> '\e[31mError (%d): %s\e[m'
# 2 -> "$1"
# 3 -> "${*:2}"
println '\e[31mError (%d): %s\e[m' "...
How can I check if a directory exists in a Bash shell script?
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One thing to keep in mind: [ ! -d "$DIRECTORY" ] will be true either if $DIRECTORY doesn't exist, or if does exist but isn't a directory. Consider something like if [ ! -d "$DIRECTORY" ] ; then mkdir "$DIRECTORY" ; fi; this ...
Best practices to test protected methods with PHPUnit
... So here, you would have to test the protected method (But never a private one). The solution to this, is to create a subclass for testing purpose, and use this to expose the methods. Eg.:
class Foo {
protected function stuff() {
// secret stuff, you want to test
}
}
class SubFoo extends F...
How to check if a Constraint exists in Sql server?
...nding other "constraints" here are some other queries for that:
--Returns one row for each CHECK, UNIQUE, PRIMARY KEY, and/or FOREIGN KEY
SELECT *
FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS
WHERE CONSTRAINT_NAME='XYZ'
--Returns one row for each FOREIGN KEY constrain
SELECT *
FROM I...
How to remove all listeners in an element? [duplicate]
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I think that the fastest way to do this is to just clone the node, which will remove all event listeners:
var old_element = document.getElementById("btn");
var new_element = old_element.cloneNode(true);
old_element.parentNode.replaceChild(new_element, old_element);
Just be c...
Multi-gradient shapes
...r stops, and the following float array defines where those stops are positioned (from 0 to 1). You can then, as stated, just use this as a standard Drawable.
Edit: Here's how you could use this in your scenario. Let's say you have a Button defined in XML like so:
<Button
android:id="@+id/th...