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Echo tab characters in bash script
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That's because echo -e is not POSIX and make calls /bin/sh which is normally not the program use use interactively, and normally hasn't -e implemented. For portability, use printf '\t' instead.
– Jo So
Oct 5 '12 at 19:02
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How does a debugger work?
... will look up the process ID, and initiate the debug session via a system call; under Windows this would be DebugActiveProcess.
Once attached, the debugger will enter an event loop much like for any UI, but instead of events coming from the windowing system, the OS will generate events based on wha...
CSS overflow-x: visible; and overflow-y: hidden; causing scrollbar issue
... edited Aug 14 '17 at 18:00
callum
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answered Jun 22 '11 at 0:13
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Finding the max/min value in an array of primitives using Java
... loop because the summaryStatistics method is a reduction operation and it allows parallelization.
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What exactly is Arel in Rails 3.0?
...alid SQL query, but one that doesn't make sense, or that does something totally different from what you think it does. This can never happen with ARel. (This is what the article I link to below means with "closed under composition".)
will objects/queries be "easier" to create?
Yes. For example, as...
What is an index in SQL?
...refman/5.0/en/mysql-indexes.html
An index can be used to efficiently find all rows matching some column in your query and then walk through only that subset of the table to find exact matches. If you don't have indexes on any column in the WHERE clause, the SQL server has to walk through the whole ...
How can I update window.location.hash without jumping the document?
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There is a workaround by using the history API on modern browsers with fallback on old ones:
if(history.pushState) {
history.pushState(null, null, '#myhash');
}
else {
location.hash = '#myhash';
}
Credit goes to Lea Verou
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FB OpenGraph og:image not pulling images (possibly https?)
... answered a similar question sometime ago with this problem). So make sure all these things are correct.
– Syed I.R.
May 25 '14 at 20:05
3
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When are you truly forced to use UUID as part of the design?
I don't really see the point of UUID . I know the probability of a collision is effectively nil , but effectively nil is not even close to impossible.
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Measuring execution time of a function in C++
...ementaion defined, high_resolution_clock may be an alias of system_clock (wall clock), steady_clock or a third independent clock. See details here. For cpu clock, std::clock may be used
– Jahid
Jan 24 '17 at 11:39
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