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How to step back in Eclipse debugger?
...ger? The current project I'm working on requires a minimum of 5 seconds to read and initialize data from a file before anything can be done. If I overstep in the debugger, I have to terminate the program and restart, and this takes a fair bit of time.
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Detect if a jQuery UI dialog box is open
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If you read the docs.
$('#mydialog').dialog('isOpen')
This method returns a Boolean (true or false), not a jQuery object.
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Displaying the Indian currency symbol on a website
... (₹). Use it like you would © for the copyright sign. For more, read Wikipedia's article on the rupee sign.
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What does |= (ior) do in Python?
...ass
R. Hettinger's OrderedSet recipe (see lines 3 and 10 respectively)
A thread on Python-ideas on why to use |= to update a set
A section B.8 of Dive in Python 3 on special methods of Python operators
+The in-place bitwise OR operator cannot be applied to literals; assign objects to names.
++Speci...
Iterate a list with indexes in Python
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And sometimes people only read the first one and a half lines of the question instead of the whole question. If you get to the end of the second line he says he wants to use it instead of for i in range(len(name_of_list)): which is what led me to prov...
Why doesn't Java support unsigned ints?
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Reading between the lines, I think the logic was something like this:
generally, the Java designers wanted to simplify the repertoire of data types available
for everyday purposes, they felt that the most common need was fo...
The Ruby %r{ } expression
...ote that the %r{}x variant ignores whitespace, making complex regexps more readable. Example from GitHub's Ruby style guide:
regexp = %r{
start # some text
\s # white space char
(group) # first group
(?:alt1|alt2) # some alternation
end
}x
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How to test multiple variables against a value?
...g his advice you would now have separate if-statements so that Python will read each statement whether the former were True or False. Such as:
if 0 in {x, y, z}:
mylist.append("c")
if 1 in {x, y, z}:
mylist.append("d")
if 2 in {x, y, z}:
mylist.append("e")
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This will work, but if y...
System.currentTimeMillis vs System.nanoTime
...safe to compare the results of System.nanoTime() calls between different threads. Even if the events of the threads happen in a predictable order, the difference in nanoseconds can be positive or negative.
System.currentTimeMillis() is safe for use between threads.
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How to saveHTML of DOMDocument without HTML wrapper?
...IS NOT THE FINAL SOLUTION HOWEVER! See below for the complete answer, keep reading for context)
We cut 12 away from the start of the document because <html><body> = 12 characters (<<>>+html+body = 4+4+4), and we go backwards and cut 15 off the end because \n</body><...