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What's the most efficient way to test two integer ranges for overlap?
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What does it mean for the ranges to overlap? It means there exists some number C which is in both ranges, i.e.
x1 <= C <= x2
and
y1 <= C <= y2
Now, if we are allowed to assume that the ranges are well-formed (so that ...
javac not working in windows command prompt
I'm trying to use javac with the windows command prompt, but it's not working.
17 Answers
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invalid_grant trying to get oAuth token from google
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I ran into this problem when I didn't explicitly request "offline" access when sending the user to the OAuth "Do you want to give this app permission to touch your stuff?" page.
Make sure you specify access_type=offline in your request.
Details here: https://develope...
Depend on a branch or tag using a git URL in a package.json?
Say I've forked a node module with a bugfix and I want to use my fixed version, on a feature branch of course, until the bugfix is merged and released.
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Why does the CheckBoxFor render an additional input tag, and how can I get the value using the FormC
...ame approach that both Ruby on
Rails and MonoRail use.
When you submit a form with a checkbox, the value is only posted if
the checkbox is checked. So, if you leave the checkbox unchecked then
nothing will be sent to the server when in many situations you would
want false to be sent ins...
Java Replacing multiple different substring in a string at once (or in the most efficient way)
... are operating on is very long, or you are operating on many strings, then it could be worthwhile using a java.util.regex.Matcher (this requires time up-front to compile, so it won't be efficient if your input is very small or your search pattern changes frequently).
Below is a full example, based ...
ActiveRecord, has_many :through, and Polymorphic Associations
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There is a known issue with Rails 3.1.1 that breaks this functionality. If you are having this problem first try upgrading, it's been fixed in 3.1.2
You're so close. The problem is you're misusing the :source option. :source should points to the po...
Java: random long number in 0
... (for m ≤ x < n). See @Alex's answer for detail.
If you are stuck with Java 6 (or Android 4.x) you need to use an external library (e.g. org.apache.commons.math3.random.RandomDataGenerator.getRandomGenerator().nextLong(0, n-1), see @mawaldne's answer), or implement your own nextLong(n).
Acc...
SQL Server Insert if not exists
... Assunto = @_ASSUNTO
AND Data = @_DATA);
END
replace with
BEGIN
IF NOT EXISTS (SELECT * FROM EmailsRecebidos
WHERE De = @_DE
AND Assunto = @_ASSUNTO
AND Data = @_DATA)
BEGIN
INSERT INTO EmailsRecebidos (De,...
How do I remove all specific characters at the end of a string in PHP?
How do I remove the last character only if it's a period?
9 Answers
9
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