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Merge two branch revisions using Subversion
...sh a working copy of branch B (svn checkout http://branch-b)
Merge changes from branch A into working copy of B (svn merge -r 10:HEAD http://branch-a .)
Commit (after resolving conflicts) working copy B to branch b (svn commit)
Check the man page (help file) for svn merge semantics. It shows you t...
Can't find the 'libpq-fe.h header when trying to install pg gem
.... I didn't find the library on my system. Thus I installed it using an app from PostgreSQL main website. In my case (OS X) I found the file under /Library/PostgreSQL/9.1/include/ once the installation was over. You may also have the file somewhere else depending on your system if you already have P...
What is “assert” in JavaScript?
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@Don: Point taken but I was just quoting from the linked pages. I do believe assertions should be treated as if they can be disabled, if only because your code might one day be used by someone who thinks it is safe to do so. If assertions are critical to your code,...
How to handle more than 10 parameters in shell
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You can have up to 256 parameters from 0 to 255 with:
${255}
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How does the Comma Operator work
... may be overloaded in C++. The actual behaviour may thus be very different from the one expected.
As an example, Boost.Spirit uses the comma operator quite cleverly to implement list initializers for symbol tables. Thus, it makes the following syntax possible and meaningful:
keywords = "and", "or"...
Check if a Class Object is subclass of another Class Object in Java
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You want this method:
boolean isList = List.class.isAssignableFrom(myClass);
where in general, List (above) should be replaced with superclass and myClass should be replaced with subclass
From the JavaDoc:
Determines if the class or interface represented by this Class object is e...
Fixed stroke width in SVG
...o use transform(ref).
That will work in browsers that support those parts from SVG Tiny 1.2, for example Opera 10. The fallback includes writing a small script to do the same, basically inverting the CTM and applying it on the elements that shouldn't scale.
If you want sharper lines you can also d...
Python Threading String Arguments
...ecieved]) # <- 1 element list
processThread.start()
If you notice, from the stack trace: self.__target(*self.__args, **self.__kwargs)
The *self.__args turns your string into a list of characters, passing them to the processLine
function. If you pass it a one element list, it will pass that...
java.lang.NoClassDefFoundError: com/sun/mail/util/MailLogger for JUnit test case for Java mail
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Good point @GlenPeterson, I didn't realise that from the solution above but when I looked into the com.sun.mail jar the javax.mail api is included in it.
– Peter
Jun 17 '16 at 19:10
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LPCSTR, LPCTSTR and LPTSTR
... C types instead of C++ types, and/or has C linkage via extern "C". Apart from that, yeah, it definitely should need either the "pointer" bit, or specific description as a C string.
– Justin Time - Reinstate Monica
Sep 11 '19 at 18:39
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