Never rewrite what is provided to you: os.path.commonprefix does exactly this: Return the longest path prefix (taken character-by-character) that is a prefix of all paths in list. If list is empty, return the empty string (”). Note that this may return invalid paths because it works a character at a time. For comparison to the … Read more
You said POSIX shells which would include BASH, Kornshell, Ash, Zsh, and Dash. Fortunately, all of these shells do pattern filtering on variable values. Patterns are what you use when you specify files with things like * on the Unix/Linux command line: $ ls *.sh # Lists all files with a `.sh` suffix These POSIX … Read more
Do configure –help and see what other options are available. It is very common to provide different options to override different locations. By standard, –prefix overrides all of them, so you need to override config location after specifying the prefix. This course of actions usually works for every automake-based project. The worse case scenario is … Read more
It’s a historical oddity, still common practice among teams who like to blindly apply coding standards that they don’t understand. Long ago, most commercial programming languages were weakly typed; automatic type checking, which we take for granted now, was still mostly an academic topic. This meant that is was easy to write code with category … Read more
Look at Make’s addsuffix function. Here is an example we use with `addsuffix` to place obj files one directory below the source. SOURCE += MainThread.cpp SOURCE += Blah.cpp OBJ=$(join $(addsuffix ../obj/, $(dir $(SOURCE))), $(notdir $(SOURCE:.cpp=.o))) From the make manual: $(addprefix prefix,names…) The argument names is regarded as a series of names, separated by whitespace; prefix … Read more
Use std::mismatch. Pass in the shorter string as the first iterator range and the longer as the second iterator range. The return is a pair of iterators, the first is the iterator in the first range and the second, in the second rage. If the first is end of the first range, then you know … Read more
In both C and C++, the result of x++ is an rvalue, so you can’t assign to it. In C, ++x is equivalent to x += 1 (C standard ยง6.5.3.1/p2; all C standard cites are to WG14 N1570). In C++, ++x is equivalent to x += 1 if x is not a bool (C++ standard … Read more
targetNamespace is an XML Schema “artifact”; its purpose: to indicate what particular XML namespace the schema file describes. xmlns – because the XML Schema is an XML document, it is then possible to define a default XML namespace for the XML file itself (this is what xmlns attribute does); the implications are multiple: authoring, and … Read more
Never rewrite what is provided to you: os.path.commonprefix does exactly this: Return the longest path prefix (taken character-by-character) that is a prefix of all paths in list. If list is empty, return the empty string (”). Note that this may return invalid paths because it works a character at a time. For comparison to the … Read more
An elegant way to prefix array values (PHP 5.3+): $prefixed_array = preg_filter(‘/^/’, ‘prefix_’, $array); Additionally, this is more than three times faster than a foreach.