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How can I check if multiplying two numbers in Java will cause an overflow?
...plyExact, Math.addExact etc. for ints and long. These throw an unchecked ArithmeticException on overflow.
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What is the best way to test for an empty string in Go?
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Both styles are used within the Go's standard libraries.
if len(s) > 0 { ... }
can be found in the strconv package: http://golang.org/src/pkg/strconv/atoi.go
if s != "" { ... }
can be found in the encoding/json package: http://golang.org/...
How to solve the “failed to lazily initialize a collection of role” Hibernate exception
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edited May 23 '17 at 12:34
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Appending a line to a file only if it does not already exist
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Just keep it simple :)
grep + echo should suffice:
grep -qxF 'include "/configs/projectname.conf"' foo.bar || echo 'include "/configs/projectname.conf"' >> foo.bar
-q be quiet
-x match the whole line
-F pattern is a plain st...
Xcode: Build Failed, but no error messages
...uilding fine for the last three months, but suddenly, when I try to build, it says "Build failed", but does not show any errors on the triangle exclamation mark tab, nor does it give a reason when it pops up build failed.
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What's the “big idea” behind compojure routes?
I'm new to Clojure and have been using Compojure to write a basic web application. I'm hitting a wall with Compojure's defroutes syntax, though, and I think I need to understand both the "how" and the "why" behind it all.
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What is the relation between BLAS, LAPACK and ATLAS
... manuals and I have a general idea of BLAS and LAPACK and how to use them with the very few examples I find, but I can't find any actual examples using ATLAS to see how it is related with these two.
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“Eliminate render-blocking CSS in above-the-fold content”
I've been using Google PageSpeed insights to try and improve my site's performance, and so far it's proven extremely successful. Things like deferring scripts worked beautifully, since I already had an in-house version of jQuery's .ready() to defer scripts until the page had loaded fully, all I ha...
Defining an abstract class without any abstract methods
Can I define an abstract class without adding an abstract method?
12 Answers
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Java String array: is there a size of method?
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edited Dec 22 '11 at 19:34
Dave Newton
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