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Run JavaScript code on window close or page refresh?
...ould save before leaving). onunload isn't supported by Opera, as far as I know, but you could always set both.
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When monkey patching an instance method, can you call the overridden method from the new implementat
...thod object and assigning it to the local variable old_bar. This means, we now have a way to hold on to bar even after it has been overwritten.
old_bar.bind(self)
This is a bit tricky. Basically, in Ruby (and in pretty much all single-dispatch based OO languages), a method is bound to a specific ...
How to set background color of an Activity to white programmatically?
...ver you called setContentView with.
setContentView(R.layout.main);
// Now get a handle to any View contained
// within the main layout you are using
View someView = findViewById(R.id.randomViewInMainLayout);
// Find the root view
View root = someView.getRootView();
// Set the color...
pytest: assert almost equal
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py.test now has a feature that does this. I've added an answer discussing it.
– dbn
Nov 3 '16 at 18:36
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Writing a Python list of lists to a csv file
...pd = pandas.DataFrame(not_index_list, columns = columns, index = index)
#Now you have a csv with columns and index:
pd.to_csv("mylist.csv")
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warning: Insecure world writable dir /usr/local/bin in PATH, mode 040777
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@Xandman: I don't know what is up with the segmentation fault; programs should not do that (especially not security related ones like sudo). Clearly, someone has been tampering with file permissions on your system - I recommend reading them th...
How does the C code that prints from 1 to 1000 without loops or conditional statements work?
...ds down to 0 for all j < 1000; once j reaches 1000, it evaluates to 1.
Now if you have a + (b - a) * n, where n is either 0 or 1, you end up with a if n == 0, and b if n == 1. Using &main (the address of main()) and &exit for a and b, the term (&main + (&exit - &main) * (j/10...
How to document Ruby code?
...look at the RDoc documentation to learn about the kinds of tags that RDoc knows how to format. To that end, I'd reformat your comment as follows:
# Runs a subprocess and applies handlers for stdout and stderr
# Params:
# +command+:: command line string to be executed by the system
# +outhan...
Rails: Is there a rails trick to adding commas to large numbers?
...mous depths of call stacks. It uses i18n to be able to format any numbers known to humanity and extraterrestrial civilizations (or maybe just to choose either , or . for decimal digits, even if you specify it as argument). It allocates thousands of objects (so its performance patterns are complex an...
What is a predicate in c#? [duplicate]
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public string Name { get; set; }
public int Age { get; set; }
}
Now let's say I have a List<Person> people and I want to know if there's anyone named Oscar in the list.
Without using a Predicate<Person> (or Linq, or any of that fancy stuff), I could always accomplish this by ...