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Are PostgreSQL column names case-sensitive?
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All identifiers (including column names) that are not double-quoted are folded to lower case in PostgreSQL. Column names that were created with double-quotes and thereby retained upper-case letters (and/or other syntax violat...
How do I put a clear button inside my HTML text input box like the iPhone does?
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@thebluefox has summarized the most of all. You're only also forced to use JavaScript to make that button to work anyway. Here's an SSCCE, you can copy'n'paste'n'run it:
<!DOCTYPE html>
<html lang="en">
<head>
<title>SO questio...
Moving and vanishing lines of code; trouble with Eclipse's XML Editor
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This bug is (finally) fixed in ADT 21. The fix is now available in ADT 21 Preview 9, posted a few minutes ago, here: https://android-review.googlesource.com/#/c/44936/1
The reason you get weird visual artifacts is that if a file contains br...
How to import local packages without gopath
... 1.11
dep or vendor if your go version is: go 1.6 >= x < go 1.11
Manually if your go version is: x < go 1.6
Edit 3: Go 1.11 has a feature vgo which will replace dep.
To use vgo, see Modules documentation. TLDR below:
export GO111MODULE=on
go mod init
go mod vendor # if you have vendor...
Why is processing a sorted array faster than processing an unsorted array?
...ver have to stop.
If you guess wrong too often, you spend a lot of time stalling, rolling back, and restarting.
This is branch prediction. I admit it's not the best analogy since the train could just signal the direction with a flag. But in computers, the processor doesn't know which direction a b...
Warning: Null value is eliminated by an aggregate or other SET operation in Aqua Data Studio
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Wouldn't the solution specifically for the "opencases" column be simpler as just "select count(1)..." (or "count" of any other literal)? The Where clause already specifies "and closed is NULL" so no need for summing a case statement in this instance. Also...
unsigned APK can not be installed
...trying to distribute my application to some people for testing.
I have installed it on my Desire directly from eclipse and it works fine.
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Understanding Spring @Autowired usage
...where, and does that for you.
Full explanation
The @Autowired annotation allows you to skip configurations elsewhere of what to inject and just does it for you. Assuming your package is com.mycompany.movies you have to put this tag in your XML (application context file):
<context:component-sca...
Difference between decimal, float and double in .NET?
...n a decimal form, and expect exact results in decimal representations; not all decimal numbers are exactly representable in binary floating point – 0.1, for example – so if you use a binary floating point value you'll actually get an approximation to 0.1. You'll still get approximations when usi...
LINQ with groupby and count
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After calling GroupBy, you get a series of groups IEnumerable<Grouping>, where each Grouping itself exposes the Key used to create the group and also is an IEnumerable<T> of whatever items are in your original data set. ...