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How can I propagate exceptions between threads?

... { teptr = std::current_exception(); } } int main(int argc, char **argv) { std::thread mythread(f); mythread.join(); if (teptr) { try{ std::rethrow_exception(teptr); } catch(const std::exception &ex) { std::cerr ...
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How to use range-based for() loop with std::map?

... If copy assignment operator of foo and bar is cheap (eg. int, char, pointer etc), you can do the following: foo f; bar b; BOOST_FOREACH(boost::tie(f,b),testing) { cout << "Foo is " << f << " Bar is " << b; } ...
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Subtract two variables in Bash

... You just need a little extra whitespace around the minus sign, and backticks: COUNT=`expr $FIRSTV - $SECONDV` Be aware of the exit status: The exit status is 0 if EXPRESSION is neither null nor 0, 1 if EXPRESSION is null or 0. Keep this in min...
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How to remove empty cells in UITableView? [duplicate]

... But it adds extra spacing above and below table sections. – Ben Sinclair Jan 30 '18 at 21:29 ...
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Is #pragma once part of the C++11 standard?

...ifferent developments, the obvious solution is to generate a lot of random characters for the include guard when you create it. (A good editor can be set up to do this for you whenever you open a new header.) But even without this, I've yet to encounter any problems with conflicts between librarie...
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Make xargs execute the command once for each line of input

...It has such a very useful extension; from xargs --help – -d, --delimiter=CHARACTER items in input stream are separated by CHARACTER, not by whitespace; disables quote and backslash processing and logical EOF processing – Piotr Dobrogost Mar 24 '16 at 21:39 ...
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How to avoid Python/Pandas creating an index in a saved csv?

...er way do to this is specify pd.read_csv(..., index_col=[0], and avoid the extra "drop" call. – cs95 May 28 '19 at 4:19 add a comment  |  ...
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Remove a folder from git tracking

...th ways. If unselecting, it does not allow to push, but then I changed one char in another file which should be tracked. Still does not help – Darius.V Dec 13 '17 at 13:50 ...
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Wait until a process ends

...itForExit(1000 * 60 * 5); // Wait up to five minutes. There are a few extra features in there which you might find useful... share | improve this answer | follow ...
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How to set tbody height with overflow scroll

... </tr> <tr> <td>February. An extra long string.</td> <td>AAA</td> <td><span>Invite | Delete</span></td> </tr> <tr> <td>March</td> <td>AAA</t...