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How to use WPF Background Worker
...gress (optional, but often useful)
a) subscribe to ProgressChanged event and use ReportProgress(Int32) in DoWork
b) set worker.WorkerReportsProgress = true; (credits to @zagy)
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CSS Selector for
...eir type? I have a disabled class I use on various disabled form elements, and I'm setting the background color for text boxes, but I don't want my checkboxes to get that color.
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What's the difference of “./configure” option “--build”, “--host” and “--target”?
The script ./configure accepts 3 options --build , --host and --target . I'm confusing their roles. What's the difference and semantics of them?
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jQuery exclude elements with certain class in selector
...e two approaches, except .not() is more readable (especially when chained) and :not() is very marginally faster. See this Stack Overflow answer for more info on the differences.
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validation custom message for rails 3
... edited Mar 4 '15 at 3:20
Andrew Hendrie
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answered Mar 22 '11 at 4:33
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Twig ternary operator, Shorthand if-then-else
Does Twig support ternary (shorthand if-else) operator?
3 Answers
3
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Argparse: Required argument 'y' if 'x' is present
...ts of options.
The simplest way to deal with this would be:
if args.prox and (args.lport is None or args.rport is None):
parser.error("--prox requires --lport and --rport.")
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How to configure robots.txt to allow everything?
...h, like the Googlebot). That said, unrecognized fields have to be ignored, and for bots that don’t recognize Allow, the result would be the same in this case anyway: if nothing is forbidden to be crawled (with Disallow), everything is allowed to be crawled.
However, formally (per the original spec...
Android, How can I Convert String to Date?
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Exactly - it's better to apply some standard form to the date string before storing it in the database. In this case en.wikipedia.org/wiki/ISO_8601
– denis.solonenko
Dec 20 '11 at 9:35
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How to cast/convert pointer to reference in C++
...pr 16 '12 at 10:53
David HeffernanDavid Heffernan
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