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How to create composite primary key in SQL Server 2008
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What is the diference between using Primary Key and CONSTRAINT like in the example by @matthew-abbott ?
– mateuscb
Oct 6 '11 at 19:57
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Including an anchor tag in an ASP.NET MVC Html.ActionLink
...t includes an anchor tag (that is, directing the user to a page, and a specific section of the page).
7 Answers
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How to write file if parent folder doesn't exist?
...File(path, contents, cb) {
mkdirp(getDirName(path), function (err) {
if (err) return cb(err);
fs.writeFile(path, contents, cb);
});
}
If the whole path already exists, mkdirp is a noop. Otherwise it creates all missing directories for you.
This module does what you want: https://npm...
find filenames NOT ending in specific extensions on Unix?
...the grep command:
find . | grep -v '(dll|exe)$'
The -v flag on grep specifically means "find things that don't match this expression."
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Is there a 'box-shadow-color' property?
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No:
http://www.w3.org/TR/css3-background/#the-box-shadow
You can verify this in Chrome and Firefox by checking the list of computed styles. Other properties that have shorthand methods (like border-radius) have their variations defined in the spec.
As with most missing "long-hand" CSS prope...
A regex to match a substring that isn't followed by a certain other substring
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Yes. I can use what I have now, but it would be easier if I could just match bot but not botters. I'm very sorry. I'm inexperienced with regexes, and I'm afraid I'm slowly figuring out what I want myself. :p
– Rayne
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YYYY-MM-DD format date in shell script
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# -1 -> explicit current date, bash >=4.3 defaults to current time if not provided
# -2 -> start time for shell
printf -v date '%(%Y-%m-%d)T\n' -1
# put current date as yyyy-mm-dd HH:MM:SS in $date
printf -v date '%(%Y-%m-%d %H:%M:%S)T\n' -1
# to print directly remove -v flag, as such...
What is the colon operator in Ruby?
...e
So, comparing a string to a string using equal? fails because they're different objects, even if they are equal content. == compares the content, and the equivalent checks with symbols are much faster.
user system total real
string 0.370000 0.000000 0....
What's the simplest way to test whether a number is a power of 2 in C++?
... 0 is best. However, note that it will incorrectly return true for n=0, so if that is possible, you will want to check for it explicitly.
http://www.graphics.stanford.edu/~seander/bithacks.html has a large collection of clever bit-twiddling algorithms, including this one.
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How to concatenate strings in twig
...nd a variable, you could do it like this:
http://{{ app.request.host }}
If you want to concatenate some variables, alessandro1997's solution would be much better.
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