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Expression Versus Statement
...ke FORTRAN, the distinction was crystal-clear. In FORTRAN, a statement was one unit of execution, a thing that you did. The only reason it wasn't called a "line" was because sometimes it spanned multiple lines. An expression on its own couldn't do anything... you had to assign it to a variable.
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Alternatives to dispatch_get_current_queue() for completion blocks in iOS 6?
... case because it's possible (and in fact fairly likely) to be on more than one queue simultaneously, due to dispatch_sync() and dispatch_set_target_queue(). There are some subsets of the general case that are possible.
– Catfish_Man
Aug 1 '13 at 18:19
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Difference between MEAN.js and MEAN.io
...ods: mean.js and mean.io. So I came up asking myself this question: "Which one do I use?".
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How does MySQL process ORDER BY and LIMIT in a query?
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One quick solution for such problems is to add one more column to order by preferably having unique values so that database gets a consistent rule for ordering rows when value of the first order-by-column is same for multiple...
Python: try statement in a single line
...to set all variables to something. If they might not get set, set them to None first (or 0 or '' or something if it is more applicable.)
If you do assign all the names you are interested in first, you do have options.
The best option is an if statement.
c = None
b = [1, 2]
if c is None:
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Repeating characters in VIM insert mode
...t,
- the character you want to insert,
Esc to leave INSERT mode.
Another one without EVER leaving INSERT mode:
Ctrl+o :norm 8ia Return
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Use grep to report back only line numbers
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@jondim it only shows the filename if there is more than one file being searched; you need to add -H to force it to show the filename when there is only one file. Conversely, you can always use -h to tell it not to output the filename no matter how many files you're grepping.
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Do I need to create indexes on foreign keys on Oracle?
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The foreign key constraint alone does not provide the index on Oracle - one must (and should) be created.
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Matplotlib plots: removing axis, legends and white spaces
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I think that the command axis('off') takes care of one of the problems more succinctly than changing each axis and the border separately. It still leaves the white space around the border however. Adding bbox_inches='tight' to the savefig command almost gets you there, you ca...
How to semantically add heading to a list
...ghest level of heading on the page. It does not say that there can only be one heading at that highest level. Incidentally, browser makers have made it clear they have no intention of implementing the outline algorithm, so there is little hope of the situation improving quickly.
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