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What does = +_ mean in JavaScript
... a number.
_ is only a variable name (not an operator), it could be a, foo etc.
Example:
+"1"
cast "1" to pure number 1.
var _ = "1";
var r = +_;
r is now 1, not "1".
Moreover, according to the MDN page on Arithmetic Operators:
The unary plus operator precedes its operand and evaluates ...
how to stop browser back button using javascript
...dows 10. I put the script in several places (start of header, end of body, etc.) and I can still use the back button to go back to the previous page.
– Victor Stoddard
Jan 18 '17 at 21:37
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Reference - What does this error mean in PHP?
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Warning: mysql_fetch_array() expects parameter 1 to be resource, boolean given
First and foremost:
Please, don't use mysql_* functions in new code. They are no longer maintained and are officially deprecated. See the red box? Learn abou...
Iterate keys in a C++ map
... template<typename C> class key_iterator : public C::iterator, etc
– Gabriel
Dec 17 '19 at 23:53
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Google Maps: how to get country, state/province/region, city given a lat/long value?
...nual fallback in case the browser does not support geolocation.
His way: fetched results are different from using
http://maps.googleapis.com/maps/api/geocode/json?address=bucharest&sensor=false
than from using
http://maps.googleapis.com/maps/api/geocode/json?latlng=44.42514,26.10540&sensor=...
presentViewController:animated:YES view will not appear until user taps again
... subtle bug, because if you have the slightest feedback animation, timers, etc. in your code this issue won't surface because the runloop will be kept alive by these sources. I've found the issue by using a UITableViewCell which had its selectionStyle set to UITableViewCellSelectionStyleNone, so tha...
Understanding __get__ and __set__ and Python descriptors
...erty type is implemented. A descriptor simply implements __get__, __set__, etc. and is then added to another class in its definition (as you did above with the Temperature class). For example:
temp=Temperature()
temp.celsius #calls celsius.__get__
Accessing the property you assigned the descripto...
How to color System.out.println output? [duplicate]
...er multi-sequence escape sequences (such as Home, End, Page Up, Page Down, etc), then curses becomes all the more important.
Example with Tput
tput is a command line utility for manipulating cursor and text
tput comes with the curses package. If you want to use cross-terminal (ish) applications i...
Javascript - Append HTML to container element without innerHTML
... think it would have been better if you created a demo (jsfiddle, codepen, etc) and then added that to Alnafie's answer by using the edit feature or submitting a comment. Creating an answer only to demonstrate another user's answer is not how SO works, regardless of how useful the information you pr...
Block Comments in a Shell Script
... in the commented-out material. I'd be leary of experimenting with spaces etc, but the word might well work with them too.
– Jonathan Leffler
Jun 28 '12 at 18:34
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