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Why CancellationToken is separate from CancellationTokenSource?
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@Mike -- Just curious: how come you can't call something like ThrowIfCancellationRequested() on a CTS like you can on a CT?
– rory.ap
Jun 16 '17 at 17:15
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How do you get the index of the current iteration of a foreach loop?
...for iterating over collections that implement IEnumerable. It does this by calling GetEnumerator on the collection, which will return an Enumerator.
This Enumerator has a method and a property:
MoveNext()
Current
Current returns the object that Enumerator is currently on, MoveNext updates Current ...
How do I change Bootstrap 3 column order on mobile layout?
...ble to change the order, even when the columns are full-width stacked vertically, thanks to Bootstrap 4 flexbox. OFC, the push pull method will still work, but now there are other ways to change column order in Bootstrap 4, making it possible to re-order full-width columns.
Method 1 - Use flex-colu...
What is the difference between a shim and a polyfill?
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A shim is any piece of code that performs interception of an API call and provides a layer of abstraction. It isn't necessarily restricted to a web application or HTML5/CSS3.
A polyfill is a type of shim that retrofits legacy browsers with modern HTML5/CSS3 features usually using Javascrip...
Android View.getDrawingCache returns null, only null
...would play out differently for different people's code, but make sure your call to loadBitmapFromView() is definitely after your ImageView contains an image.
– Azurespot
Apr 2 '15 at 7:05
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iOS Safari – How to disable overscroll but allow scrollable divs to scroll normally?
...on(e){
e.preventDefault();
});
// Uses body because jQuery on events are called off of the element they are
// added to, so bubbling would not work if we used document instead.
$('body').on('touchstart', selScrollable, function(e) {
if (e.currentTarget.scrollTop === 0) {
e.currentTarget.scro...
How to determine the current shell I'm working on
...all number (for example, if the shell's PID is "5", you may find processes called "java5" or "perl5" in the same grep output!). This is the second problem with the "ps" approach, on top of not being able to rely on the shell name.
echo $SHELL - The path to the current shell is stored as the SHELL va...
Checking if a blob exists in Azure Storage
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The new API has the .Exists() function call. Just make sure that you use the GetBlockBlobReference, which doesn't perform the call to the server. It makes the function as easy as:
public static bool BlobExistsOnCloud(CloudBlobClient client,
string containe...
How to use ternary operator in razor (specifically on HTML attributes)?
...e, you are in a foreach loop) is using a generic method.
The syntax for calling a generic method in Razor is:
@(expression)
In this case, the expression is:
User.Identity.IsAuthenticated ? "auth" : "anon"
Therefore, the solution is:
@(User.Identity.IsAuthenticated ? "auth" : "anon")
This...
MongoDB/NoSQL: Keeping Document Change History
...k changes to one or more specific entities in a database. I've heard this called row versioning, a log table or a history table (I'm sure there are other names for it). There are a number of ways to approach it in an RDBMS--you can write all changes from all source tables to a single table (more o...