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Is a colon `:` safe for friendly-URL use?
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In addition to McDowell's analysis on URI standard, remember also that the fragment must be valid HTML anchor name. According to http://www.w3.org/TR/html4/types.html#type-name
ID and NAME tokens must begin with a
letter ([A-Za-z]) and may be followed
by any nu...
Number of occurrences of a character in a string [duplicate]
...dibly expensive, if the string is large. Worst case if the string is large and (almost) entirely made up of repeated delimiters (&), it could allocate 12-24x the original size of the string due to object overheads in .Net. I would go with the second approach, and if that's not fast enough then w...
Get type of a generic parameter in Java with reflection
... to be some reflection-magic around that I unfortunetly don't fully understand... Sorry.
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How do I force a UITextView to scroll to the top every time I change the text?
...I m setting this in cell for row but not working
– Chandni
Oct 31 '17 at 9:00
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How to reset postgres' primary key sequence when it falls out of sync?
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-- Login to psql and run the following
-- What is the result?
SELECT MAX(id) FROM your_table;
-- Then run...
-- This should be higher than the last result.
SELECT nextval('your_table_id_seq');
-- If it's not higher... run this set the sequ...
Can you list the keyword arguments a function receives?
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A little nicer than inspecting the code object directly and working out the variables is to use the inspect module.
>>> import inspect
>>> def func(a,b,c=42, *args, **kwargs): pass
>>> inspect.getargspec(func)
(['a', 'b', 'c'], 'args', 'kwargs', (42,))
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In Perl, how can I read an entire file into a string?
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Add:
local $/;
before reading from the file handle. See How can I read in an entire file all at once?, or
$ perldoc -q "entire file"
See Variables related to filehandles in perldoc perlvar and perldoc -f local.
Incidentally, if you can put your script on the server,...
constant pointer vs pointer on a constant value [duplicate]
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char * const a;
means that the pointer is constant and immutable but the pointed data is not.
You could use const_cast(in C++) or c-style cast to cast away the constness in this case as data itself is not constant.
const char * a;
means that the pointed data cannot be writ...
Purpose of asterisk before a CSS property
...immediately before a
property name, the property will be
applied in IE and not in other
browsers. Unlike with the hyphen and
underscore method, the CSS
specification makes no reservations
for the asterisk as a prefix, so use
of this hack could result in
unexpected behavior as the CSS...
Increment value in mysql update query
...uery has the following note: This extension is deprecated as of PHP 5.5.0, and will be removed in the future. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide and related FAQ for more information.
– aland
Mar 24 '...