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RVM: Uninstalling all gems of a gemset

... rvm gemset empty <gemset name> This will remove all gems from your mentioned gemset. share | improve this answer | follow | ...
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Virtual functions and performance - C++

...loop, so the additional overhead per call was 7 nanoseconds per function. From this I conclude: yes, virtual functions are much slower than direct functions, and no, unless you're planning on calling them ten million times per second, it doesn't matter. See also: comparison of the generated assemb...
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What is the best way to programmatically detect porn images? [closed]

... PORNsweeper seems to have some ability to distinguish pictures of people from pictures of things that aren't people, as long as the pictures are in colour. It is less successful at distinguishing dirty pictures of people from clean ones. With the default, medium sensitivity, if Human Resources sen...
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What is the “FS”/“GS” register intended for?

...be independent and part of a persistent virtual store. The idea was taken from the 1966 Multics operating system, that treated files as simply addressable memory segments. No BS "Open file, write record, close file", just "Store this value into that virtual data segment" with dirty page flushing. ...
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How to use SVN, Branch? Tag? Trunk?

...requency depends on your style of project management. Many people refrain from committing if it'll break the build (or functionality). Branches can be used in one of two ways, typically: 1) One active branch for development (and the trunk stays stable), or 2) branches for alternate dev paths. Tag...
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Convert base-2 binary number string to int

... Another way to do this is by using the bitstring module: >>> from bitstring import BitArray >>> b = BitArray(bin='11111111') >>> b.uint 255 Note that the unsigned integer is different from the signed integer: >>> b.int -1 The bitstring module isn't a req...
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Override compile flags for single files

...r file/target rather than overwriting as you seem to expect. For example, from the docs for Properties on Source Files - COMPILE_FLAGS: These flags will be added to the list of compile flags when this source file builds. You should be able to countermand the -Weffc++ flag for foo.cpp by doing...
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How to format numbers? [duplicate]

...n leaves the remaining integer, stores it in k and then subtracts it again from the original number, leaving the decimal by itself. Also, if we're to take negative numbers into account, we need to while loop (skipping three digits) until we hit b. This has been calculated to be 1 when dealing with ...
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How to force cp to overwrite without confirmation

...ill abolish that for the current session, otherwise you can just remove it from your shell profile. You can temporarily bypass an alias and use the non-aliased version of a command by prefixing it with \, e.g. \cp whatever ...
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async/await - when to return a Task vs void?

... I meant f instead of g in my comment. The exception from f is passed to the SynchronizationContext. g will raise UnobservedTaskException, but UTE no longer crashes the process if it's not handled. There are some situations where it's acceptable to have "asynchronous exceptions...