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Use dynamic (variable) string as regex pattern in JavaScript
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let idr = new RegExp(variable + "$"); Table.find({ field: new RegExp(idr, 'i') }) I did like this. Cheers.
– Utkarsh
Jul 24 at 11:45
ad...
Drawing text to with @font-face does not work at the first time
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Tried this approach with .ttf font - doesn't work stably on Chrome (41.0.2272.101 m). Even the setTimeout in 5 seconds doesn't help - first render goes with default font.
– Mikhail Fiadosenka
Mar 30 '15 at 13:51
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Why is “if not someobj:” better than “if someobj == None:” in Python?
...a __nonzero__ special method (as do numeric built-ins, int and float), it calls this method. It must either return a bool value which is then directly used, or an int value that is considered False if equal to zero.
Otherwise, if the object has a __len__ special method (as do container built-ins, li...
How can I force WebKit to redraw/repaint to propagate style changes?
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To avoid flickering you may try 'inline-block', 'table' or 'run-in' instead of 'none', but this may have side-effects. Also, a timeout of 0 triggers a reflow just like querying offsetHeight does: sel.style.display = 'run-in'; setTimeout(function () { sel.style.display = 'bl...
How can I open Java .class files in a human-readable way?
...e system
-l Print line number and local variable tables
-public Show only public classes and members
-protected Show protected/public classes and members
-package Show package/protected/public classes
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How to find the size of localStorage
...ly developing a site that will make use of HTML5's localStorage. I've read all about the size limitations for different browsers. However, I haven't seen anything on how to find out the current size of a localStorage instance. This question seems to indicate that JavaScript doesn't have a built in...
Inheritance and Overriding __init__ in python
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The book is a bit dated with respect to subclass-superclass calling. It's also a little dated with respect to subclassing built-in classes.
It looks like this nowadays:
class FileInfo(dict):
"""store file metadata"""
def __init__(self, filename=None):
super(FileInfo,...
Define a lambda expression that raises an Exception
...ur goal is to avoid a def, this obviously doesn't cut it. It does, however allow you to conditionally raise exceptions, e.g.:
y = lambda x: 2*x if x < 10 else raise_(Exception('foobar'))
Alternatively you can raise an exception without defining a named function. All you need is a strong stom...
How does this print “hello world”?
...binary representations for the lowercase
alphabet letters in the following table:
ascii | ascii | ascii | algorithm
character | decimal value | binary value | 5-bit codification
--------------------------------------------------------------
space | 32 | 01000...
Is it ever advantageous to use 'goto' in a language that supports loops and functions? If so, why?
...o this already):
Cleanly exiting a function
Often in a function, you may allocate resources and need to exit in multiple places. Programmers can simplify their code by putting the resource cleanup code at the end of the function, and all "exit points" of the function would goto the cleanup label....