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List comprehension with if statement
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You got the order wrong. The if should be after the for (unless it is in an if-else ternary operator)
[y for y in a if y not in b]
This would work however:
[y if y not in b else other_value for y in a]
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How to calculate dp from pixels in android programmatically [duplicate]
... a dp->px conversion rather than px->dp, which is what the OP asked for.
Note that TypedValue.applyDimension cannot be used to convert px->dp, for that you must use the method described here: https://stackoverflow.com/a/17880012/504611 (quoted below for convenience).
Without Context ob...
Subtract two variables in Bash
I have the script below to subtract the counts of files between two directories but the COUNT= expression does not work. What is the correct syntax?
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How do I force git to use LF instead of CR+LF under windows?
I want to force git to checkout files under Windows using just LF not CR+LF . I checked the two configuration options but I was not able to find the right combination of settings.
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Rails: redirect_to with :error, but flash[:error] empty
I'm trying to do a redirect while setting the flash[:error] value. (Rails 3.0.10)
3 Answers
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How to pass command line argument to gnuplot?
...variable
$ cat foo.plg
plot filename
pause -1
To make "foo.plg" a bit more generic, use a conditional:
if (!exists("filename")) filename='default.dat'
plot filename
pause -1
Note that -e has to precede the filename otherwise the file runs before the -e statements. In particular, running a she...
Why did Bootstrap 3 switch to box-sizing: border-box?
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Better box model by default. Everything in Bootstrap gets box-sizing: border-box, making for easier sizing options and an enhanced grid system.
Personally I think most benefits go to the grid system. In Twitter's Bootstrap all grids are fluid. Columns are defined as percentage of the total wid...
Why static classes cant implement interfaces? [duplicate]
In my application I want to use a Repository that will do the raw data access ( TestRepository , SqlRepository , FlatFileRepository etc).
Because such a repository would be used throughout the runtime of my application it seemed like a sensible thing to me to make it a static class so I could go
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iPhone: Setting Navigation Bar Title
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The view controller must be a child of some UINavigationController for the .title property to take effect. If the UINavigationBar is simply a view, you need to push a navigation item containing the title, or modify the last navigation item:
UINavigationItem* item = [[UINavigationItem alloc] ...
Decreasing for loops in Python impossible?
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for n in range(6,0,-1):
print n
# prints [6, 5, 4, 3, 2, 1]
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