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How to take a screenshot programmatically on iOS
... Core Graphics contexts
Apple Docs - UIGraphicsImageRenderer
So you can now do something like this:
let renderer = UIGraphicsImageRenderer(size: someView.bounds.size)
let image = renderer.image(actions: { context in
someView.drawHierarchy(in: someView.bounds, afterScreenUpdates: true)
})
...
How to atomically delete keys matching a pattern using Redis
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Important note: this fails if you have more than a couple thousand keys matching the prefix.
– Nathan Osman
Aug 8 '14 at 16:42
93
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How to check whether dynamically attached event listener exists or not?
...mically attached event listeners exist or not.
The only way you can see if an event listener is attached is by attaching event listeners like this:
elem.onclick = function () { console.log (1) }
You can then test if an event listener was attached to onclick by returning !!elem.onclick (or some...
How do I deserialize a JSON string into an NSDictionary? (For iOS 5+)
...t it's best practice to not test error in these cases, but instead to test if the return value is nil or not before returning. i.e. return json ?: nil; Minor nitpick, but worth mentioning, I think.
– Mike
Jan 6 '16 at 17:04
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How to debug Lock wait timeout exceeded on MySQL?
...mpting to change at least one row in one or more InnoDB tables.
Since you know the query, all the tables being accessed are candidates for being the culprit.
From there, you should be able to run SHOW ENGINE INNODB STATUS\G
You should be able to see the affected table(s)
You get all kinds of additio...
How to Store Historical Data
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We are using the same aproach.But now I am wondering is it better to store only START_DATETIME and don't store END_DATETIME
– bat_ventzi
May 27 '15 at 7:40
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Source unreachable when using the NuGet Package Manager Console
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It also worked for me (right now, actually!). I was trying to install an older version of jQuery, but it kept raising the error: "The source at nuget.org [nuget.org/api/v2/]". I don't know how to fix it though.
– Loudenvier
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Add native files from NuGet package to project output directory
... directories will be created in the project's output directory when built. If you don't need subdirectories then the ** and the %(RecursiveDir) can be removed and instead include the required files in the build directory directly. Other required content files can also be added in the same way.
The ...
Set margins in a LinearLayout programmatically
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Ha, ok I understand now. Was getting a bit lost in the layout system which is rather complicated. I don't think there's anyway to set layout_widgth/height at runtime.
– Timmmm
Mar 20 '10 at 10:51
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Correct way to write line to file?
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@HorseSMith: I see. Hopefully my most recent edit clarifies my intent. Feel free to edit my answers if they are "rather useless and misleading".
– Johnsyweb
Dec 3 '14 at 9:57
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