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Hidden features of Ruby
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edited Dec 8 '10 at 21:15
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How do I choose between Tesseract and OpenCV? [closed]
I recently came across Tesseract and OpenCV . It looks like Tesseract is a full-fledged OCR engine and OpenCV can be used as a framework to create an OCR application/service.
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How to search file text for a pattern and replace it with a given value
...file (or list of files) for a pattern and, if found, replace that pattern with a given value.
10 Answers
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Scroll to a div using jquery
... to scroll to the different divs. Basically the page is just one long website, where I'd like to scroll to different divs using the menu box to the side.
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JavaScript for…in vs for
...choice should be based on the which idiom is best understood.
An array is iterated using:
for (var i = 0; i < a.length; i++)
//do stuff with a[i]
An object being used as an associative array is iterated using:
for (var key in o)
//do stuff with o[key]
Unless you have earth shattering ...
OwinStartup not firing
I had the OwinStartup configuration code working perfectly and then it stopped working. Unfortunately I'm not sure exactly what I did to get it to stop working and am having a really hard time figuring it out.
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How do I close an open port from the terminal on the Mac?
...do lsof -i :5955
Kill the process which is currently using the port using its PID
sudo kill -9 PID
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Force R not to use exponential notation (e.g. e+10)?
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This is a bit of a grey area. You need to recall that R will always invoke a print method, and these print methods listen to some options. Including 'scipen' -- a penalty for scientific display. From help(options):
‘scipen’: i...
Search and replace a line in a file in Python
...he contents of a text file and do a search and replace on some lines and write the result back to the file. I could first load the whole file in memory and then write it back, but that probably is not the best way to do it.
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How do you access the matched groups in a JavaScript regular expression?
...ole.log(match[1]); // abc
And if there are multiple matches you can iterate over them:
var myString = "something format_abc";
var myRegexp = /(?:^|\s)format_(.*?)(?:\s|$)/g;
match = myRegexp.exec(myString);
while (match != null) {
// matched text: match[0]
// match start: match....