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JavaScript hashmap equivalent
... of the object, e.g., a key, or a set of keys, which are already unique, a combination of keys, which are unique together, or as complex as using some cryptographic hashes like in DojoX encoding, or DojoX UUID. While the latter solutions may produce unique keys, personally I try to avoid them at all...
What exactly does @synthesize do?
...erty called mapView.
@synthesize mapView = mapView1;
This line tells the compiler to create a setter and getter for mapView, and that they should use the ivar called mapView1. Without the = mapView1 part, the compiler would assume that the property and ivar have the same name. (In this case, that ...
What's the state of the art in email validation for Rails?
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/\A[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]+\z/
That was adapted from http://www.regular-expressions.info/email.html -- which you should read if you really want to know all the tradeoffs. If you want a more correct and much more complicated fully RFC822-compliant regex, that's on that page too...
How do I output coloured text to a Linux terminal?
... I'd look at this for a visualization of the colors: misc.flogisoft.com/bash/tip_colors_and_formatting
– Liran Funaro
May 8 '17 at 10:17
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Remove all special characters with RegExp
...sired = stringToReplace.replace(/[^\w\s]/gi, '')
As was mentioned in the comments it's easier to do this as a whitelist - replace the characters which aren't in your safelist.
The caret (^) character is the negation of the set [...], gi say global and case-insensitive (the latter is a bit redund...
Java - No enclosing instance of type Foo is accessible
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
What is the best way to trigger onchange event in react js
...odepen with an example
To understand why new flag is needed I found this comment very helpful:
The input logic in React now dedupe's change events so they don't fire
more than once per value. It listens for both browser onChange/onInput
events as well as sets on the DOM node value prop (w...
Eclipse: Enable autocomplete / content assist
How can I enable autocomplete in Eclipse? I can't find it!
8 Answers
8
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Why are unnamed namespaces used and what are their benefits?
...the anonymous namespace gets a unique name.
Read the excellent article at comeau-computing Why is an unnamed namespace used instead of static? (Archive.org mirror).
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CSS selector with period in ID
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You could also use img[id=some.id]]
More info here: http://www.w3.org/TR/selectors/#attribute-selectors
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