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How do I create a unique constraint that also allows nulls?
...want to have a unique constraint on a column which I am going to populate with GUIDs. However, my data contains null values for this columns. How do I create the constraint that allows multiple null values?
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How to compare two Dates without the time portion?
...dDate = second.toLocalDate();
return firstDate.compareTo(secondDate);
EDIT: As noted in comments, if you use DateTimeComparator.getDateOnlyInstance() it's even simpler :)
// TODO: consider extracting the comparator to a field.
return DateTimeComparator.getDateOnlyInstance().compare(first, second...
How to get current foreground activity context in android?
Whenever my broadcast is executed I want to show alert to foreground activity.
14 Answers
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How do I dynamically assign properties to an object in TypeScript?
...o programatically assign a property to an object in Javascript, I would do it like this:
23 Answers
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Can't append element
... directly (by which I mean creating the HTML from text like you're trying with the script tag), but when you do them with built-in commands things go better. Try this:
var script = document.createElement( 'script' );
script.type = 'text/javascript';
script.src = url;
$("#someElement").append( scri...
Java ArrayList replace at specific index
I need help with this java please. I created an ArrayList of bulbs, and I'm trying to replace a bulb at specific index with another bulb. So with the following heading, how do I proceed?
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Determine path of the executing script
...dirname(sys.frame(1)$ofile)
returns the path of the current script file. It works after the script was saved.
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Are list-comprehensions and functional functions faster than “for loops”?
... rough guidelines and educated guesses based on experience. You should timeit or profile your concrete use case to get hard numbers, and those numbers may occasionally disagree with the below.
A list comprehension is usually a tiny bit faster than the precisely equivalent for loop (that actually bu...
Empty Visual Studio Project?
...ution, I mean an empty project in a solution. Basically I have a solution with multiple projects, and I want to add a project to track some static files that are part of the solution but not of any specific project. Adding them as solution files doesn't work because solution folders are not mapped t...
Safe integer parsing in Ruby
I have a string, say '123' , and I want to convert it to the integer 123 .
8 Answers
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