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Why rgb and not cmy? [closed]
...mary colors are cyan, magenta and yellow (CMY), why do monitors and almost all the GUI components out there use red, green and blue (RGB)? (If I'm not mistaken, printers use the CMYK model.)
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How do I make a JAR from a .java file?
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you have to build the classpath referring all the libraries you're referencing in your classes. Check with your jdeveloper installation, there should be some ant build example (build.xml file) and at least a couple of good tutorials on how to use jDeveloper with ANT ...
Recursion in Angular directives
...are a couple of popular recursive angular directive Q&A's out there, which all come down to one of the following solutions:
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xcopy file, rename, suppress “Does xxx specify a file name…” message
...se the xcopy, use copy instead, it doesn't have this issue.
xcopy is generally used when performing recursive copies of multiple files/folders, or when you need the verification/prompting features it offers. For single file copies, the copy command works just fine.
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How to stop app that node.js express 'npm start'
...ackage.json, and then use npm stop
npm help npm-stop
You can make this really simple if you set in app.js,
process.title = myApp;
And, then in scripts.json,
"scripts": {
"start": "app.js"
, "stop": "pkill --signal SIGINT myApp"
}
That said, if this was me, I'd be using pm2 or some...
What's the complete range for Chinese characters in Unicode?
U+4E00..U+9FFF is part of the complete set,but not all
6 Answers
6
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Rails 3: Get Random Record
...; rand(Thing.count))
# Rails 3
Thing.offset(rand(Thing.count)).first
Actually, in Rails 3 all examples will work. But using order RANDOM is quite slow for big tables but more sql-style
UPD. You can use the following trick on an indexed column (PostgreSQL syntax):
select *
from my_table
where i...
How to remove an HTML element using Javascript?
...em);
return false;
}
But you don't need (or want) a form for that at all, not if its sole purpose is to remove the dummy div. Instead:
HTML:
<input type="button" value="Remove DUMMY" onclick="removeDummy()" />
JavaScript:
function removeDummy() {
var elem = document.getElementBy...
Convert a Unicode string to a string in Python (containing extra symbols)
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This breaks if the content of the string is actually unicode, not just ascii characters in a unicode string. Don't do this, you'll get random UnicodeEncodeError exceptions all over the place.
– Doug
Oct 9 '13 at 7:31
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Do we need semicolon at the end? [duplicate]
...andable manner using examples under the headings:
Where Semicolons are Allowed
Where Semicolons May be Omitted
The rules
It even digs into the official ECMAScript specification about the topic.
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