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SQL, Postgres OIDs, What are they and why are they useful?
...
OIDs basically give you a built-in id for every row, contained in a system column (as opposed to a user-space column). That's handy for tables where you don't have a primary key, have duplicate rows, etc. For example, if you...
Multiple controllers with AngularJS in single page app
...e controllers, just use multiple ngController directives:
<div class="widget" ng-controller="widgetController">
<p>Stuff here</p>
</div>
<div class="menu" ng-controller="menuController">
<p>Other stuff here</p>
</div>
You will need to have ...
TypeScript with KnockoutJS
...is why we use definition files for code written in JavaScript so as to provide typescript type checking. Of course you could declare libs as "any", but this is not good.hope I helped!
– George Mavritsakis
Dec 1 '12 at 16:03
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Error: Jump to case label
...wing code, if foo equals 1, everything is ok, but if it equals 2, we'll accidentally use the i variable which does exist but probably contains garbage.
switch(foo) {
case 1:
int i = 42; // i exists all the way to the end of the switch
dostuff(i);
break;
case 2:
dostuff(i*2); // ...
How often does python flush to a file?
...l io.DEFAULT_BUFFER_SIZE of 8192. Is that a Python bug, a Linux bug, or an ID10t bug?
– Bruno Bronosky
Dec 1 '17 at 17:00
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How to set focus on input field?
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When a Modal is opened, set focus on a predefined <input> inside this Modal.
Define a directive and have it $watch a property/trigger so it knows when to focus the element:
Name: <input type="text" focus-me="shouldBeOpen">
app.directive('focusMe', ['$timeout', '$parse',...
Depend on a branch or tag using a git URL in a package.json?
...git#feature/blah worked but <user>/<project>.git#feature/blah didn't ... perhaps their regex needs to be more advanced to take feature/blah into account. This was npm v1.4.28
– pulkitsinghal
Jul 2 '15 at 17:13
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“From View Controller” disappears using UIViewControllerContextTransitioning
...ss when trying to add subviews to my navigation controller's view, in viewDidLoad. Re-adding the navigationController's view to the keyWindow seemed to do the trick, thanks a lot, Ash!
– taber
Jul 9 '14 at 3:26
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Change key pair for ec2 instance
...one of the answers below.
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-key-pairs.html#replacing-lost-key-pair
Here is what I did, thanks to Eric Hammond's blog post:
Stop the running EC2 instance
Detach its /dev/xvda1 volume (let's call it volume A) - see here
Start new t1.micro EC2 i...
WebSockets vs. Server-Sent events/EventSource
...SEs have been kept in the shadow is because later APIs like WebSockets provide a richer protocol to perform bi-directional, full-duplex communication. Having a two-way channel is more attractive for things like games, messaging apps, and for cases where you need near real-time updates in both direct...