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How can Perl's print add a newline by default?
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36
You can use the -l option in the she-bang header:
#!/usr/bin/perl -l
$text = "hello";
print...
demystify Flask app.secret_key
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Martijn Pieters♦Martijn Pieters
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How can I convert ereg expressions to preg in PHP?
Since POSIX regular expressions (ereg) are deprecated since PHP 5.3.0, I'd like to know an easy way to convert the old expressions to PCRE (Perl Compatible Regular Expressions) (preg) .
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Grep characters before and after match?
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3 characters before and 4 characters after
$> echo "some123_string_and_another" | grep -o -P '.{0,3}string.{0,4}'
23_string_and
share
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Unit testing that events are raised in C# (in order)
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edited May 12 '11 at 15:38
David Hall
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answ...
Scala: Abstract types vs generics
...g like this:
// Type parameter version
class MySuite extends FixtureSuite3[StringBuilder, ListBuffer, Stack] with MyHandyFixture {
// ...
}
Whereas with the type member approach it will look like this:
// Type member version
class MySuite extends FixtureSuite3 with MyHandyFixture {
// ....
My Understanding of HTTP Polling, Long Polling, HTTP Streaming and WebSockets
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Plugin networking
HTTP long poll, streaming
Also note that there is a W3C proposal for standardizing HTTP streaming called Server-Sent Events. It is currently fairly early in it's evolution and is designed to provide a standard Javascript API with comparable simplicity to WebSockets.
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Using wget to recursively fetch a directory with arbitrary files in it
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edited Oct 4 '17 at 21:53
waldyrious
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answered ...
Android: How to handle right to left swipe gestures
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thunderbird
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answered Oct 17 '12 at 16:19
Mirek RusinMirek R...
What is an intuitive explanation of the Expectation Maximization technique? [closed]
... characterise each group. For example, the mean of the red group is around 3, the mean of the blue group is around 7 (and we could find the exact means if we wanted).
This is, generally speaking, known as maximum likelihood estimation. Given some data, we compute the value of a parameter (or parame...