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Change Activity's theme programmatically
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Works for me on MotoG (v1) with stack Android 5.1. If it is not working for you please share device+android version.
– lenrok258
Jun 17 '16 at 10:14
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How is pattern matching in Scala implemented at the bytecode level?
... explored with a disassembler but the short answer is that it's a bunch of if/elses where the predicate depends on the pattern
case Sum(l,r) // instance of check followed by fetching the two arguments and assigning to two variables l and r but see below about custom extractors
case "hello" // equa...
How to replace ${} placeholders in a text file?
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Small hint: if "1" or "dog" in the given example would contain a dollar symbol, you would have to escape it with a backslash (otherwise replacement does not occur).
– MatthieuP
Jan 10 '09 at 2:35
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List all svn:externals recursively?
...ernals and where they point.. but not the 'location' of the external.. ie if i have lib\my_ex as an external i only get my_ex http:/svnlinkhere
– ShoeLace
Jun 17 '09 at 15:47
4
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How to check if a model has a certain column/attribute?
I have a method that needs to loop through a hash and check if each key exists in a models table, otherwise it will delete the key/value.
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How to use ELMAH to manually log errors
...x)
{
Elmah.ErrorSignal.FromCurrentContext().Raise(ex);
}
There is a difference between the two solutions:
Raise method applies ELMAH filtering rules to the exception. Log method does not.
Raise is subscription based and is able to log one exception into the several loggers.
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Toggle input disabled attribute using jQuery
...return this.each(function() {
var $this = $(this);
if ($this.attr('disabled')) $this.removeAttr('disabled');
else $this.attr('disabled', 'disabled');
});
};
})(jQuery);
Example link.
EDIT: updated the example link/code to maintaining chainability!...
Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
...bits of v; first get LSB of v
int s = sizeof(v) * CHAR_BIT - 1; // extra shift needed at end
for (v >>= 1; v; v >>= 1)
{
r <<= 1;
r |= v & 1;
s--;
}
r <<= s; // shift when v's highest bits are zero
Faster (32-bit processor)
unsigned char b = x;
b = ((b * 0x08...
How to extract numbers from a string in Python?
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If you only want to extract only positive integers, try the following:
>>> str = "h3110 23 cat 444.4 rabbit 11 2 dog"
>>> [int(s) for s in str.split() if s.isdigit()]
[23, 11, 2]
I would argue that this is ...
Remove all child elements of a DOM node in JavaScript
...s is updated to use lastChild as in computer-science, in general, it's significantly faster to remove the last element of a collection than it is to remove the first element (depending on how the collection is implemented).
The loop continues to check for firstChild just in case it's faster to check...