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Adding up BigDecimals using Streams

...ded a totalMapper variable, that has a function from Invoice to BigDecimal and returns the total price of that invoice. Then I obtain a Stream<Invoice>, map it to a Stream<BigDecimal> and then reduce it to a BigDecimal. Now, from an OOP design point I would advice you to also actually ...
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Save plot to image file instead of displaying it using Matplotlib

I am writing a quick-and-dirty script to generate plots on the fly. I am using the code below (from Matplotlib documentation) as a starting point: ...
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Find first element in a sequence that matches a predicate

... I am a python newbie and read the docs and the ifilter uses the "yield" method. I assume this means that the predicate is lazily evaluated as we go. i.e, we dont run the predicate through the entire list because I have a predicate function that i...
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Find unmerged Git branches?

I have a Git repository with many branches, some of them already merged and some not. Since the number of branches is quite large, how can I determine which branches have not yet been merged? I would like to avoid having to do an "octopus" merge and re-merging branches that have already been merged....
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How to ignore xargs commands if stdin input is empty?

Consider this command: 6 Answers 6 ...
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How can I open several files at once in Vim?

...ere a way to open all the files in a directory from within Vim? So a :command that would say in effect "Open all the files under /some/path into buffers". ...
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What's the meaning of 'origin' in 'git push origin master'

... git repository you cloned from. Have a look at .git/refs/remotes/origin/* and .git/config within your sources to see how git knows about it. share | improve this answer | fo...
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How do I exclude all instances of a transitive dependency when using Gradle?

... least 5 or 6 other transitive dependencies - this project is using spring and hadoop, so everything but the kitchen sink is getting pulled in... no wait... that's there too :) ). ...
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How do I handle too long index names in a Ruby on Rails ActiveRecord migration?

...archable"} in this case the index was in fact a multi-column(searchable_id and searchable_type) and the addition of the namespace in the generated name became very long. – mkrinblk Jan 3 '17 at 22:56 ...
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Modifying the “Path to executable” of a windows service

... There is also this approach seen on SuperUser which uses the sc command line instead of modifying the registry: sc config <service name> binPath= <binary path> Note: the space after binPath= is important. You can also query the current configuration using: sc qc <service na...