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How to check if the user can go back in browser history or not
I want using JavaScript to see if there is history or not, I mean if the back button is available on the browser or not.
18...
ngModel Formatters and Parsers
I posted the same question in different form, but no one answered. I am not getting a clear picture of what the Formatters and Parsers do in angular js.
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Why is parenthesis in print voluntary in Python 2.7?
... a Tuple. This special treatment of the print statement enables it to act differently if there is a trailing , or not.
Happy coding.
*This print behavior in Python 2 can be changed to that of Python 3:
from __future__ import print_function
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AngularJS ng-style with a conditional expression
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As @Yoshi said, from angular 1.1.5 you can use-it without any change.
If you use angular < 1.1.5, you can use ng-class.
.largeWidth {
width: 100%;
}
.smallWidth {
width: 0%;
}
// [...]
ng-class="{largeWidth: myVar == 'ok', smallWidth: myVar != 'ok'}"
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How to debug Ruby scripts [closed]
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I also recommend using Pry (definitely a life changer!).. Once installed and required in your program, setting a breakpoint is as easy as writing binding.pry. It also comes with colour completion, documentation lookup, and possibility to dynamically edit and reload a...
Check if a variable is a string in JavaScript
...// displays "object"
Example from this webpage. (Example was slightly modified though).
This won't work as expected in the case of strings created with new String(), but this is seldom used and recommended against[1][2]. See the other answers for how to handle these, if you so desire.
The Goo...
jQuery: keyPress Backspace won't fire?
...s backspace, keypress doesn't -> weird. is there a chance to also check if two keys are pressed like cmd-c, or cmd-v, or cmd-a
– matt
Jan 14 '11 at 11:28
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Using Enum values as String literals
...you have FOUR options here. All four offer a solution but with a slightly different approach...
Option One: use the built-in name() on an enum. This is perfectly fine if you don't need any special naming format.
String name = Modes.mode1.name(); // Returns the name of this enum constant, exact...
OSError: [Errno 2] No such file or directory while using python subprocess in Django
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Use shell=True if you're passing a string to subprocess.call.
From docs:
If passing a single string, either shell must be True or
else the string must simply name the program to be executed without
specifying any arguments.
subpr...
How to check if a string is a valid date
...errors which we don't expect and make the debugging of the code extremely difficult.
– yagooar
Jan 29 '13 at 10:32
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