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How can I run PowerShell with the .NET 4 runtime?
...ngine) runs fine under .NET 4.0. PowerShell (the console host and the ISE) do not, simply because they were compiled against older versions of .NET. There's a registry setting that will change the .NET framework loaded systemwide, which will in turn allow PowerShell to use .NET 4.0 classes:
reg ad...
How to force a html5 form validation without submitting it via jQuery
...es that some browsers have (such as Chrome), unfortunately the only way to do that is by submitting the form, like this:
var $myForm = $('#myForm');
if(! $myForm[0].checkValidity()) {
// If the form is invalid, submit it. The form won't actually submit;
// this will just cause the browser to d...
.prop() vs .attr()
...efer attr().
Original answer
If you've only ever used jQuery and not the DOM directly, this could be a confusing change, although it is definitely an improvement conceptually. Not so good for the bazillions of sites using jQuery that will break as a result of this change though.
I'll summarize th...
What does multicore assembly language look like?
...hread to set up its own tables and messaging queues. The OS uses those to do the actual multi-threaded scheduling.
As far as the actual assembly is concerned, as Nicholas wrote, there's no difference between the assemblies for a single threaded or multi threaded application. Each logical thread ha...
How do I delete rows in a data frame?
...ame is called myData:
myData[-c(2, 4, 6), ] # notice the -
Of course, don't forget to "reassign" myData if you wanted to drop those rows entirely---otherwise, R just prints the results.
myData <- myData[-c(2, 4, 6), ]
...
How to upgrade rubygems
...e
update_rubygems
gem update --system
run this commands as root or use sudo.
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Difference between abstract class and interface in Python
...ise NotImplementedError( "Should have implemented this" )
Because Python doesn't have (and doesn't need) a formal Interface contract, the Java-style distinction between abstraction and interface doesn't exist. If someone goes through the effort to define a formal interface, it will also be an abs...
How do I dynamically change the content in an iframe using jquery?
.../javascript" src="jquery.js"></script>
<script>
$(document).ready(function(){
var locations = ["http://webPage1.com", "http://webPage2.com"];
var len = locations.length;
var iframe = $('#frame');
var i = 0;
setInterval(function () {
...
How to configure git bash command line completion?
E.g. on a fresh ubuntu machine, I've just run sudo apt-get git , and there's no completion when typing e.g. git check[tab] .
...
don't fail jenkins build if execute shell fails
...
You don't need the || exit 0 in the first case, if command returns false the execution will stop. That said, the second option is very helpful!
– Nir Alfasi
Dec 2 '15 at 21:21
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