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Calling virtual functions inside constructors
...is a recipe for disaster in most OO languages. Different languages will perform differently when this situation is encountered.
The basic problem is that in all languages the Base type(s) must be constructed previous to the Derived type. Now, the problem is what does it mean to call a polymorphic m...
Eclipse IDE for Java - Full Dark Theme
...una Feature #5", Eclipse 4.4 (Luna) has a dark theme included in it (see informatik01's comment):
When Eclipse 3.0 shipped in 2004 it brought a new look to the workbench. Now, 10 years later, an entirely new Dark Theme is launching.
The theme extends to more than just the Widgets. Syntax ...
How to replace DOM element in place using Javascript?
...
A.replaceWith(span) - No parent needed
Generic form:
target.replaceWith(element)
Way better/cleaner than the previous method.
For your use case:
A.replaceWith(span)
Advanced usage
You can pass multiple values (or use spread operator ...).
Any string value will be added...
How does the main() method work in C?
... then it finds argc and argv as the two topmost stack items. If it's a platform-specific three-argument variant with an environment pointer (a common extension), that will work too: it will find that third argument as the third element from the top of the stack.
And so a fixed call works for all ca...
What does the NS prefix mean?
...y laid out in the other answers, that's why I didn't bother copying that information into mine. Sorry if that offends someone - I don't mind if the accepted answer changes to one of the others (if that's possible - never checked that).
– Olaf Kock
Aug 8 '12 at ...
How can I output leading zeros in Ruby?
...rb(main):001:0> "%03d" % 5
=> "005"
The left-hand-side is a printf format string, and the right-hand side can be a list of values, so you could do something like:
irb(main):002:0> filename = "%s/%s.%04d.txt" % ["dirname", "filename", 23]
=> "dirname/filename.0023.txt"
Here's a print...
Convert to binary and keep leading zeros in Python
...
Use the format() function:
>>> format(14, '#010b')
'0b00001110'
The format() function simply formats the input following the Format Specification mini language. The # makes the format include the 0b prefix, and the 010 si...
Should each and every table have a primary key?
...nique index, you should declare it and get both logical consistency and performance.
See this article in my blog for why you should always create a unique index on unique data:
Making an index UNIQUE
P.S. There are some very, very special cases where you don't need a primary key.
Mostly they i...
What is the difference between a definition and a declaration?
...In other words, "forward declaration" a misnomer, since there are no other forms of class declarations in C++.)
Thanks to litb (Johannes Schaub) who dug out the actual chapter and verse in one of his answers.
share
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Best practice multi language website
...case could probable be mitigated using cookie value (which would contain information about previous choice of language), to implement with less magic and hope.
Which approach to use?
As you might already guessed, I would recommend http://site.tld/[:language]/[:query] as the more sensible option.
Als...