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Warning: push.default is unset; its implicit value is changing in Git 2.0

...n the docs, but I'll try to summarize: matching means git push will push all your local branches to the ones with the same name on the remote. This makes it easy to accidentally push a branch you didn't intend to. simple means git push will push only the current branch to the one that git pull wo...
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Why can't C# interfaces contain fields?

For example, suppose I want an ICar interface and that all implementations will contain the field Year . Does this mean that every implementation has to separately declare Year ? Wouldn't it be nicer to simply define this in the interface? ...
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Create an empty data.frame

I'm trying to initialize a data.frame without any rows. Basically, I want to specify the data types for each column and name them, but not have any rows created as a result. ...
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How do I write stderr to a file while using “tee” with a pipe?

... need to keep an exra FD and do cleanup afterward by killing it and technically should be doing that in a trap '...' EXIT. There is a better way to do this, and you've already discovered it: tee. Only, instead of just using it for your stdout, have a tee for stdout and one for stderr. How will yo...
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What is the difference between persist() and merge() in JPA and Hibernate?

...these other entities are annotated with the cascade=PERSIST or cascade=ALL annotation element value or specified with the equivalent XML descriptor element. If X is a removed entity, it becomes managed. If X is a detached object, the EntityExistsException may be thrown when the...
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Program does not contain a static 'Main' method suitable for an entry point

Suddenly my whole project stopped compiling at all, showing the following message: 9 Answers ...
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.NET obfuscation tools/strategy [closed]

...e it compiled again with very little effort. Now with .Net 3.5 I'm not at all sure. Try decompiling a 3.5 assembly; what you get is a long long way from compiling. Add the optimisations from 3.5 (far better than 1.1) and the way anonymous types, delegates and so on are handled by reflection (they...
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How can I parse a string with a comma thousand separator to a number?

... May I suggest that we instead capture all commas by using: .replace(/,/g, '') This regex uses the global g to replace-all. – gdibble Aug 28 '15 at 4:59 ...
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Are default enum values in C the same for all compilers?

When declaring an enum as shown below, do all C compilers set the default values as x=0 , y=1 , and z=2 on both Linux and Windows systems? ...
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Epoch vs Iteration when training neural networks

...twork terminology: one epoch = one forward pass and one backward pass of all the training examples batch size = the number of training examples in one forward/backward pass. The higher the batch size, the more memory space you'll need. number of iterations = number of passes, each pass using [bat...