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PermGen elimination in JDK 8
...t using the -XX:MaxMetaspaceSize flag, and the default is unlimited, which means that only your system memory is the limit. The -XX:MetaspaceSize tuning flag defines the initial size of metaspace If you don’t specify this flag, the Metaspace will dynamically re-size depending of the application de...
How to make Regular expression into non-greedy?
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might be useful to note that ? on its own means 'one or zero' (but is greedy!). E.g. 'bb'.replace(/b?/, 'a') //'ab' and 'bb'.replace(/c?/, 'a') //'abb'
– Hashbrown
Oct 4 '13 at 4:46
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check if directory exists and delete in one command unix
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I think the original question was intended to mean: perform the delete only when file/directory exists or not. This command may work and produce similar results but actually doing a test before the command makes more sense.
– Ankur Chauhan
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Print array elements on separate lines in Bash?
... @espaciomore '%s\n' is the format for the printf function's output. %s means a placeholder for a string argument (in this case the array element) and \n adds a line break after that. Thus, there will be a string and a line break in the output for each element in the array.
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How to export revision history from mercurial or git to cvs?
...s/checkout -u -p -c ORIG_HEAD HEAD
You can see what each of those options mean on the man page for git-cvsexportcommit. You do have the option of setting the -w option in your git config:
% git config cvsexportcommit.cvsdir /path/to/cvs/checkout
If the patch fails for whatever reason, my experien...
How does Spring autowire by name when more than one matching bean is found?
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When you say "bean name", do you mean the name of the field which will contain the bean? (i.e. in this case country)
– Fund Monica's Lawsuit
Sep 17 '18 at 19:15
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How to create full compressed tar file using Python?
... A second note; using arcname=os.path.basename(source_dir) still means that the archive contains a folder which contains the contents of source_dir. If you want the root of the archive to contain the contents themselves, and not contents within a folder, use arcname=os.path.sep instead.
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Web Service vs WCF Service
...cations. If you like, you can think of it as a SOA enabler. What does this mean?
Well, WCF conforms to something known as ABC, where A is the address of the service that you want to communicate with, B stands for the binding and C stands for the contract. This is important because it is possible to...
What is a ViewModelLocator and what are its pros/cons compared to DataTemplates?
...esigner attempts to use reflection to create instances of our Views, which means that:
If the View constructor requires a ViewModel instance the designer won't be able to instantiate the View at all -- it will error out in some controlled manner
If the View has a parameterless constructor the View...
How do I find out if first character of a string is a number?
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You don't need the {1,1} suffix, which means that "the preceding pattern must appear between 1 and 1 times". This means exactly the same as the pattern does on its own.
– Andrzej Doyle
Jun 4 '13 at 14:43
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