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Python argparse mutual exclusive group

...ptions within the group mutually exclusive. What you're looking for is subcommands. Instead of prog [ -a xxxx | [-b yyy -c zzz]], you'd have: prog command 1 -a: ... command 2 -b: ... -c: ... To invoke with the first set of arguments: prog command_1 -a xxxx To invoke with the...
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Cast Object to Generic Type for returning

...cast an object to return value of a method? I tried this way but it gave a compile time exception in "instanceof" part: 3 A...
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Consequences of using graft in Mercurial

... like this, it's clear that we can merge D and F. Merging is a matter of "completing the diamond". So we find a new state M that is a mix of D and F and where the difference from D to M is similar to +f and the difference from F to M is similar to -e. It looks like this: -e +f' .---- D -...
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Mongoose indexing in production code

... I've never understood why the Mongoose documentation so broadly recommends disabling autoIndex in production. Once the index has been added, subsequent ensureIndex calls will simply see that the index already exists and then return. So it only has an effect on performance when you're firs...
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Do c++11 lambdas capture variables they don't use?

...bda]/11: If a lambda-expression has an associated capture-default and its compound-statement odr-uses this or a variable with automatic storage duration and the odr-used entity is not explicitly captured, then the odr-used entity is said to be implicitly captured. Your lambda expression has an as...
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What is std::string::c_str() lifetime?

... The c_str() result becomes invalid if the std::string is destroyed or if a non-const member function of the string is called. So, usually you will want to make a copy of it if you need to keep it around. In the case of your example, it appears ...
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git: fatal unable to auto-detect email address

I just cannot commit with git on Ubuntu 14.04 12 Answers 12 ...
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Reading a string with scanf

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jQuery autocomplete tagging plug-in like StackOverflow's input tags? [closed]

What solutions accomplish the same auto-completion that SO uses for entering tags? 6 Answers ...
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Is there a way to quickly capitalize the variable name in Eclipse

... just blindly changes the case on the selected characters. note: This tip comes from eclipse help. If you need to find it, click Help, Search, then type "uppercase". You'll find a page with lots of shortcuts. share ...