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“Invalid signature file” when attempting to run a .jar
My java program is packaged in a jar file and makes use of an external jar library, bouncy castle . My code compiles fine, but running the jar leads to the following error:
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Check if inputs are empty using jQuery
...m that I would like all fields to be filled in. If a field is clicked into and then not filled out, I would like to display a red background.
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How do you create a Swift Date object?
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Swift has its own Date type. No need to use NSDate.
Creating a Date and Time in Swift
In Swift, dates and times are stored in a 64-bit floating point number measuring the number of seconds since the reference date of January 1, 2001 at 00:00:00 UTC. This is expressed in the Date structure. Th...
How do you do Impersonation in .NET?
...ersonationContext
WindowsIdentity
The code can often get lengthy though and that is why you see many examples like the one you reference that try to simplify the process.
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What is the equivalent of “colspan” in an Android TableLayout?
I'm using a TableLayout in Android. Right now I have one TableRow with two items in it, and, below that, a TableRow with one item it it. It renders like this:
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Create empty file using python [duplicate]
...fter the open() statement finished - but it's cleaner to do it explicitely and relying on CPython-specific behaviour is not good either.
In case you want touch's behaviour (i.e. update the mtime in case the file exists):
import os
def touch(path):
with open(path, 'a'):
os.utime(path, N...
How can I check whether an array is null / empty?
I have an int array which has no elements and I'm trying to check whether it's empty.
13 Answers
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Associating enums with strings in C#
...t would be a tiny bit slower, but this would in most cases be neglectable. And it wouldn't have the exact same behaviour in the editor. E.G.: switching over this one wouldn't automatically fill in a case for each possibility. Other than those minor points, I think this is probably a rather simple so...
How to vertically center a container in Bootstrap?
... for a way to vertically center the container div inside the jumbotron and to set it in the middle of the page.
9 Answ...
How to make Twitter bootstrap modal full screen
... / padding issues, try right+clicking (or cmd+clicking on mac) the element and select "inspect element" on Chrome or "inspect element with firebug" on Firefox. Try selecting different HTML elements in the "elements" panel and editing the CSS on the right in real-time until you get the padding / spa...