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How does the “this” keyword work?
...dentifiers are resolved in the lexical scope like any
other variable. That means that inside an arrow function, this...refer(s) to the values of this in the environment
the arrow function is defined in.
Just for fun, test your understanding with some examples
To reveal the answers, mouse over the l...
Difference between JSONObject and JSONArray
...[].
**Tip to remember** : Here, order of element is important. That means you have
to go straight like the shape of the bracket i.e. straight lines.
(Note :It is just my logic to remember the shape of both.)
5. Order of elements is important. Example: ["Ford","BMW","Fiat"] is not ...
Python `if x is not None` or `if not x is None`?
...comment is correct. (At least, I wasn't able to prove it otherwise.)
This means if x is not None has the exact result as if not x is None. I stand corrected. Thanks bukzor.
However, my answer still stands: Use the conventional if x is not None. :]
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Storyboard - refer to ViewController in AppDelegate
...ze scenes from the AppDelegate you're most likely doing something wrong. I mean imagine you, for some reason, want to send data to a view controller way down the stack, the AppDelegate shouldn't be reaching way into the view controller stack to set data. That's not its business. It's business is the...
Does MongoDB's $in clause guarantee order
...
@lboyel I didn't mean it to be that clever :-), but that worked because it was using Mongoose's Document#equals to compare against the doc's _id field. Updated to make the _id comparison explicit. Thanks for asking.
– Jo...
Find html label associated with a given input
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I meant move the init code inside the method, not do it just once :(
– Joel Coehoorn
Nov 13 '08 at 2:48
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How can I retrieve Id of inserted entity using Entity framework? [closed]
...ng the top-voted answer for something that may not be required.
This also means that updates complete in a single transaction, potentially avoiding orphin data (either all updates complete, or none do).
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Should I put the Google Analytics JS in the or at the end of ?
...ing they made a mistake coming there in the first place. Even when they do mean to be there, I don't want to make them wait an extra millisecond to see my content.
– Melinda Green
Oct 28 '15 at 20:06
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Regex - Does not contain certain Characters
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^[^<>]+$
The caret in the character class ([^) means match anything but, so this means, beginning of string, then one or more of anything except < and >, then the end of the string.
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querySelector search immediate children
...f problems with that. @disfated wants it to work with querySelector, which means that :eq() can't be used. Even if it could, your selector would return the element that is :eq() to its appearance on the page, not :eq() to the index of its parent (which is where you're getting the idx).
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