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Is R's apply family more than syntactic sugar?
... 0.53
system.time(z <- lapply(y, foo))
# user system elapsed
# 0.72 0.00 0.72
system.time(z3 <- vapply(y, foo, numeric(1)))
# user system elapsed
# 0.7 0.0 0.7
identical(z1, z3)
# [1] TRUE
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Explanation of the UML arrows
...ce cheat sheet (http://loufranco.com/wp-content/uploads/2012/11/cheatsheet.pdf):
It covers:
Class Diagram
Sequence Diagram
Package Diagram
Object Diagram
Use Case Diagram
And provides a few samples.
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What is a reasonable length limit on person “Name” fields?
...s" and found this doc justice.gov.uk/guidance/docs/electoral-reg-standards.pdf
– Tony R
Oct 22 '10 at 20:01
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Print a list in reverse order with range()?
... please explain this as well, also can you please recommend me any website/pdf book for python
– ramesh.mimit
Sep 2 '11 at 16:21
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Command-line Unix ASCII-based charting / plotting tool
...ersist"
printAndRun(com)
# ---- convert to PDF
An example of use:
[$]> git shortlog -s -n | awk '{print $1}' | eplot 2> /dev/null
3500 ++-------+-------+--------+--------+-------+--------+-------+-------++
+ + + "/tmp/eplot20121...
Managing constructors with many parameters in Java
... .build();
See page 8 and following of this Josh Bloch presentation (PDF), or this review of Effective Java
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What does it mean by buffer?
... thank you for the simple explanation. However, the attached PDF url has been dead
– hassan
Mar 1 '18 at 11:53
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How to mkdir only if a directory does not already exist?
...y trees with one command
mkdir -p project/{lib/ext,bin,src,doc/{html,info,pdf},demo/stat/a}
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Check if image exists on server using JavaScript?
... server. There is no check if that file actually is an image. It could be .pdf, .html, some random file renamed to *.jpg or *.png. If something ends with .jpg it doesn't mean it's 100% image :)
– CoR
Jun 16 '15 at 9:53
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Get data from file input in JQuery
...="file" type="file" class="file-loading"
`enter code here`accept=".pdf" multiple>
</div>
<script>
$("#uploadFile1").fileinput({
autoReplace: true,
maxFileCount: 5
});
</script>
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