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How do I run a program with a different working directory from current, from Linux shell?
...our prompt of the parent shell, in the directory you started from.
Error handling: To avoid running the program without having changed the directory, e.g. when having misspelled /c, make the execution of helloworld conditional:
(cd /c && /a/helloworld)
Reducing memory usage: To avoid hav...
git - Find commit where file was added
...it-log#Documentation/git-log.txt---diff-filterACDMRTUXB82308203
I have a handy alias for this, because I always forget it:
git config --global alias.whatadded 'log --diff-filter=A'
This makes it as simple as:
git whatadded -- foo.js
The below one liner will recursively search through sub di...
Spring Java Config: how do you create a prototype-scoped @Bean with runtime arguments?
...me) {
return new Thing(name);
}
is used to register a bean definition and provide the factory for creating the bean. The bean that it defines is only instantiated upon request using arguments that are determined either directly or through scanning that ApplicationContext.
In the case of a proto...
Force LF eol in git repo and working copy
...y hosted on github. Many of the files were initially developed on Windows, and I wasn't too careful about line endings. When I performed the initial commit, I also didn't have any git configuration in place to enforce correct line endings. The upshot is that I have a number of files with CRLF line e...
Are parallel calls to send/recv on the same socket valid?
...send/recv then yes, you can call them simultaneously from multiple threads and things will work.
This doesn't necessarily mean that they'll be executed in parallel -- in the case of multiple sends, the second will likely block until the first completes. You probably won't notice this much, as a se...
How does the C# compiler detect COM types?
... +1 for being awesome by writing the accepted answer when Eric Lippert and Jon Skeet also answered ;) No, really, +1 for mentioning CoClass.
– OregonGhost
Jul 10 '09 at 16:16
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Count number of days between two dates
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With the Date (and DateTime) classes you can do (end_date - start_date).to_i to get the number of days difference.
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C++11 std::threads vs posix threads
...many platforms, go for Posix Threads. They are available almost everywhere and are quite mature. On the other hand if you only use Linux/gcc std::thread is perfectly fine - it has a higher abstraction level, a really good interface and plays nicely with other C++11 classes.
The C++11 std::thread cl...
No @XmlRootElement generated by JAXB
...der to marshal/unmarshal a given object, specifically the XML element name and namespace. You can't just pass any old object to the Marshaller. @XmlRootElement provides this information.
The annotation is just a convenience, however - JAXB does not require it. The alternative to is to use JAXBEleme...
Variable declaration placement in C
...on of s as a GNU extension, even though it's not part of the C89 or ANSI standard. If you want to adhere strictly to those standards, you must pass the -pedantic flag.
The declaration of c at the start of a { } block is part of the C89 standard; the block doesn't have to be a function.
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