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Regex exactly n OR m times
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There is no single quantifier that means "exactly m or n times". The way you are doing it is fine.
An alternative is:
X{m}(X{k})?
where m < n and k is the value of n-m.
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Which is better, number(x) or parseFloat(x)?
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The difference between parseFloat and Number
parseFloat/parseInt is for parsing a string, while Number/+ is for coercing a value to a number. They behave differently. But first let's look at where they behave the same:
parseFloa...
Spring Data JPA find by embedded object property
...ies with a property of an embedded object in that entity. Does anyone know if this is possible, and if so how?
4 Answers
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Running Python on Windows for Node.js dependencies
...eanwhile, just using the set command only affects the current cmd session. If you reboot after that, as you say you did, you end up with a whole new cmd session that doesn't have that variable set in it.
There are a few ways to set environment variables permanently—the easiest is in the System Co...
Prevent ViewPager from destroying off-screen views
...e Support Package, a method was added to ViewPager which allows you to specify the number of offscreen pages to use, rather than the default which is 1.
In your case, you want to specify 2, so that when you are on the third page, the first one is not destroyed, and vice-versa.
mViewPager = (ViewP...
Servlet returns “HTTP Status 404 The requested resource (/servlet) is not available”
...ch as the server itself. This way you eliminiate potential environment-specific problems. Packageless servlets work only in specific Tomcat+JDK combinations and this should never be relied upon.
In case of a "plain" IDE project, the class needs to be placed in its package structure inside "Java Re...
C++: variable 'std::ifstream ifs' has initializer but incomplete type
Sorry if this is pretty noobish, but I'm pretty new to C++. I'm trying to open a file and read it using ifstream :
1 Answe...
Difference between a Seq and a List in Scala
...ut habit is hard to break.
Seq is a good generalization for sequences, so if you program to interfaces, you should use that. Note that there are actually three of them: collection.Seq, collection.mutable.Seq and collection.immutable.Seq, and it is the latter one that is the "default" imported into ...
What is content-type and datatype in an AJAX request?
... use this to figure out how to populate the success function's parameter.
If you're posting something like:
{"name":"John Doe"}
and expecting back:
{"success":true}
Then you should have:
var data = {"name":"John Doe"}
$.ajax({
dataType : "json",
contentType: "application/json; charse...
Print list without brackets in a single row
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If some elements in names aren't strings, use print(', '.join(map(str,name))) instead.
– Anonymous
Dec 1 '19 at 9:43
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