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How to verify if a file exists in a batch file?
I have to create a .BAT file that does this:
3 Answers
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What algorithms compute directions from point A to point B on a map?
How do map providers (such as Google or Yahoo! Maps) suggest directions?
18 Answers
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Getting the class name from a static method in Java
...o hard-code in knowledge of MyClass like that, then you might as well just do String name = "MyClass"; !
– John Topley
Jun 1 '09 at 20:45
111
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How do I convert a string to a lower case representation?
How do I convert a string to a lower case representation?
2 Answers
2
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What are best practices for validating email addresses on iOS 2.0
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Great but doesn't work on OS <3.0, because NSPredicate is not available.
– Felixyz
Oct 13 '09 at 12:58
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How do I declare and assign a variable on a single line in SQL
...char(max) = 'Man''s best friend';
You will note that the ' is escaped by doubling it to ''.
Since the string delimiter is ' and not ", there is no need to escape ":
DECLARE @var nvarchar(max) = '"My Name is Luca" is a great song';
The second example in the MSDN page on DECLARE shows the correc...
Get records with max value for each group of grouped SQL results
How do you get the rows that contain the max value for each grouped set?
17 Answers
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Throw away local commits in Git
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If your excess commits are only visible to you, you can just do
git reset --hard origin/<branch_name>
to move back to where the origin is. This will reset the state of the repository to the previous commit, and it will discard all local changes.
Doing a git revert makes new co...
How do I remove a property from a JavaScript object?
....log(obj.hasOwnProperty('myProperty')) // false
The delete operator does not directly free memory, and it differs from simply assigning the value of null or undefined to a property, in that the property itself is removed from the object. Note that if the value of a deleted property was a refe...
Tactics for using PHP in a high-load site
...lly crippling. If you turned it on without testing, you'd never know.
And don't forget that you are never done scaling. A site that handles 10req/s will need changes to support 1000req/s. And if you're lucking enough to need to support 10,000req/s, your architecture will probably look completely di...