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What does .SD stand for in data.table in R
...et's try and predict a pitcher's ERA (Earned Runs Average, a measure of performance) using the small set of covariates available in the Pitching table. How does the (linear) relationship between W (wins) and ERA vary depending on which other covariates are included in the specification?
Here's a sh...
Testing the type of a DOM element in JavaScript
...HTML DOM returns the tagName of an HTML element in the canonical uppercase form, regardless of the case in the source HTML document."
– bobwienholt
Jan 29 '14 at 14:57
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How can I perform a culture-sensitive “starts-with” operation from the middle of a string?
...ny casemappings first and separately from handling different Normalization forms.
For example:
x heiße y
^--- cursor
Matches heisse but then moves cursor 1 too much. And:
x heisse y
^--- cursor
Matches heiße but then moves cursor 1 too less.
This will apply to any character that doesn'...
JPG vs. JPEG image formats
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JPG and JPEG stand both for an image format proposed and supported by the Joint Photographic Experts Group. The two terms have the same meaning and are interchangeable.
To read on, check out Difference between JPG and JPEG.
The reason for the different fil...
How to recover a dropped stash in Git?
... separate GUI app.
To spot stash commits, look for commit messages of this form:
WIP on somebranch: commithash Some old commit message
Note: The commit message will only be in this form (starting with "WIP on") if you did not supply a message when you did git stash.
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Guid is all 0's (zeros)?
...t constructor new S() on any value type always gives you back the all-zero form of that value type, whatever it is. It is logically the same as default(S).
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How to convert an iterator to a stream?
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Again, () -> sourceIterator; is a shortened form of new Iterable<>() { @Override public Iterator<String> iterator() { return sourceIterator; } }
– Jin Kwon
Jan 13 '15 at 12:23
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Find the PID of a process that uses a port on Windows
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how to get the only PID form above results
– Chinya
Oct 29 '15 at 11:45
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Ruby on Rails: How do I add placeholder text to a f.text_field?
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In Rails 4(Using HAML):
=f.text_field :first_name, class: 'form-control', autofocus: true, placeholder: 'First Name'
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WebClient vs. HttpWebRequest/HttpWebResponse
... for those situations where you just want to do an operation (eg: POST/GET/Form upload) and cant be bothered to create and manage the HttpWebRequest, RequestStream, HttpWebResponse, and response stream.
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