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Validate that a string is a positive integer
...lly big numbers, this will go to scientific notation, which may break this approach. (I don't quite know where the split is, the details are in the spec, but for whole numbers I believe it's at the point you've exceeded 21 digits [by which time the number has become very imprecise, as IEEE-754 doubl...
“From View Controller” disappears using UIViewControllerContextTransitioning
...subview of the key window's:
transitionContext.completeTransition(true)
UIApplication.sharedApplication().keyWindow!.addSubview(toViewController.view)
I've checked and the key window's rootViewController is still correctly set, so that's fine. I'm not sure what would happen if you presented your ...
How do I fix blurry text in my HTML5 canvas?
...and am working with the canvas to render shapes, colors, and text. In my app, I have a view adapter that creates a canvas dynamically, and fills it with content. This works really nicely, except that my text is rendered very fuzzy/blurry/stretched. I have seen a lot of other posts on why definin...
Chrome DevTools Devices does not detect device when plugged in
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(Note - this worked for me using a Samsung S6. I'd appreciate any comments on the phone version used, for anyone these instruction work for)
If your phone is connecting to your computer and being recognised on the computer, and you've enabled USB debugging on your phone, but...
How Do I Fetch All Old Items on an RSS Feed?
... on a RSS reader and decided to build my own RSS archival service (https://app.pub.center). It's free to use the REST API. We charge money for push notifications.
The service daily polls it's catalog of RSS feeds, and caches the articles. Then, you can get these articles back in a chronological ord...
Synchronously waiting for an async operation, and why does Wait() freeze the program here
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The ConfigureAwait(false) is the appropriate solution in this case. Since it has no need to call the callbacks in the captured context, it shouldn't. Being an API method it should handle it internally, rather than forcing all of the callers to move out of ...
Git branch strategy for small dev team [closed]
We have a web app that we update and release almost daily. We use git as our VCS, and our current branching strategy is very simple and broken: we have a master branch and we check changes that we 'feel good about' into it. This works, but only until we check in a breaking change.
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MySQL Great Circle Distance (Haversine formula)
...0.0 miles of the lat/long point 42.81/-70.81 . When you build this into an app, that's where you put your own point and search radius.
If you want to work in kilometers rather than miles, change 69 to 111.045 and change 3963.17 to 6378.10 in the query.
Here's a detailed writeup. I hope it helps s...
Using tags in the with other HTML
... no mainstream browser currently supports the scoped attribute. (Although apparently developer builds of Chromium support it.)
HOWEVER, there is an interesting implication of the scoped attribute that pertains to this question. It means that future browsers are mandated via the standard to allow ...
How to send data to local clipboard from a remote SSH session
... + pivotal_workstation::xquartz recipe, but you don't have to)
Run XQuartz.app
Open XQuartz Preferences (+,)
Make sure "Enable Syncing" and "Update Pasteboard when CLIPBOARD changes" are checked
ssh -X remote-host "echo 'hello from remote-host' | xclip -selection clipboard"
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