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How to concatenate two strings to build a complete path
...some path joining stuff like you do.
The thing is, both path like
/data/foo/bar
/data/foo/bar/
are valid.
If I want to append a file to this path like
/data/foo/bar/myfile
there was no native method (like os.path.join() in python) in shell to handle such situation.
But I did found a tr...
Stack Memory vs Heap Memory [duplicate]
...l the heap? What platform are you on, MS-DOS?
– Fred Foo
Apr 29 '11 at 19:33
3
@larsman But did y...
In Vim is there a way to delete without putting text in the register?
...d,
unless the command specified another register with ["x].
E.g. we yank "foo" and delete "bar" - the registry 0 still contains "foo"! Hence "foo" can be pasted using "0p
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How do you remove all the options of a select box and then add one option and select it with jQuery?
...like:
$('select').children().remove();
$('select').append('<option id="foo">foo</option>');
$('#foo').focus();
Response to "EDIT": Can you clarify what you mean by "This select box is populated by a set of radio buttons"? A <select> element cannot (legally) contain <input typ...
Display help message with python argparse when script is called without any arguments
...print_help()
sys.exit(2)
parser = MyParser()
parser.add_argument('foo', nargs='+')
args = parser.parse_args()
Note that the above solution will print the help message whenever the error
method is triggered. For example, test.py --blah will print the help message
too if --blah isn't a va...
How to rsync only a specific list of files?
...e source dir. For example, take this command:
rsync -a --files-from=/tmp/foo /usr remote:/backup
If /tmp/foo contains the string "bin" (or even "/bin"), the /usr/bin directory will be created as /backup/bin on the remote host. If it contains "bin/" (note the trailing slash), the immedi...
URLs: Dash vs. Underscore [closed]
...ow 6 years old and possibly not representing the contemporary status quo), foo_bar is treated as a single word while foo-bar is treated as two words - precisely the opposite of what this answer speculates is the case.
– Mark Amery
Dec 19 '17 at 21:49
...
Checking if sys.argv[x] is defined
...hree arguments) and it can potentially hide errors (eg, if you used blah = foo(sys.argv[1]), but foo(...) raised an IndexError, that IndexError would be ignored).
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XSD - how to allow elements in any order any number of times?
...Fixed type in XML.
Edit: Capitalised O in maxOccurs
<xs:element name="foo">
<xs:complexType>
<xs:choice maxOccurs="unbounded">
<xs:element name="child1" type="xs:int" maxOccurs="unbounded"/>
<xs:element name="child2" type="xs:string" maxOccurs="unbo...
Is it possible to roll back CREATE TABLE and ALTER TABLE statements in major SQL databases?
...situations are quite handled- for example, if you try to select from table foo while another transaction is dropping it and creating a replacement table foo, then the blocked transaction will finally receive an error rather than finding the new foo table. (Edit: this was fixed in or before PostgreSQ...