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How to highlight cell if value duplicate in same column for google spreadsheet?
... in the A1:A100 cells will be checked, and if there is a duplicate (occurs more than once) then it'll be coloured.
For locales using comma (,) as a decimal separator, the argument separator is most likely a semi-colon (;). That is, try: =countif(A:A;A1)>1, instead.
For multiple columns, use cou...
What are C++ functors and their uses?
...bove, functors can be "customized" because they contain state, making them more flexible (If I wanted to use a function pointer, I'd have to write a function which added exactly 1 to its argument. The functor is general, and adds whatever you initialized it with), and they are also potentially more ...
How are everyday machines programmed?
...systems contain a microprocessor which runs code. Though this is becoming more popular as microcontrollers and EEPROM (which make debugging and upgrading easier) become cheaper, it is still not worth it for very cheap systems, or systems which have not changed much over the last 20 years. For exam...
Catch multiple exceptions at once?
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@JoãoBragança: While this answer in this example uses more lines, try to imagine if you are dealing with file IO for example, and all you want to do is catch those exceptions and do some log messaging, but only those you expect coming from your file IO methods. Then you often ha...
Are the days of passing const std::string & as a parameter over?
...f someone wants to hold on to it, they can. If they don't, oh well.
Is it more expensive? Yes; moving into a value is more expensive than using references. Is it less expensive than the copy? Not for small strings with SSO. Is it worth doing?
It depends on your use case. How much do you hate memor...
Checking if a field contains a string
...ld and you have a large number of documents, I would tokenize the text for more efficient queries. You could use multikeys for a simple full-text search, or perhaps build an inverted index as a separate collection. For infrequent searches or a small collection of documents, scanning the full index...
How to create a CPU spike with a bash command
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You can also do
dd if=/dev/zero of=/dev/null
To run more of those to put load on more cores, try to fork it:
fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null & }; fulload; read; killall ...
What is the best way to detect a mobile device?
...userAgent) ) {
// some code..
}
Or you can combine them both to make it more accessible through jQuery...
$.browser.device = (/android|webos|iphone|ipad|ipod|blackberry|iemobile|opera mini/i.test(navigator.userAgent.toLowerCase()));
Now $.browser will return "device" for all above devices
Not...
UITableView load more when scrolling to bottom like Facebook application
...ew) using a paginating mechanism. Could any one please tell me how to load more data in my list when the user scrolls to the end of the list (like on home page on Facebook application)?
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