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What algorithm can be used for packing rectangles of different sizes into the smallest rectangle pos
Ive got a bunch of rectangular objects which I need to pack into the smallest space possible (the dimensions of this space should be powers of two).
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Quickly reading very large tables as dataframes
I have very large tables (30 million rows) that I would like to load as a dataframes in R. read.table() has a lot of convenient features, but it seems like there is a lot of logic in the implementation that would slow things down. In my case, I am assuming I know the types of the columns ahead o...
java get file size efficiently
... {
LENGTH {
@Override
public long getResult() throws Em>x m>ception {
File me = new File(FileSizeBench.class.getResource(
"FileSizeBench.class").getFile());
return me.length();
}
},
CHANNEL {
@Override
public...
How to organize large R programs?
When I undertake an R project of any complem>x m>ity, my scripts quickly get long and confusing.
11 Answers
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How to make Java honor the DNS Caching Timeout?
...GSLB for geo-distribution and load-balancing. Each service is assigned a fim>x m>ed domain name. Through some DNS magic, the domain name is resolved into an IP that's closest to the server with least load. For the load-balancing to work, the application server needs to honor the TTL from DNS response and...
What is the JavaScript >>> operator and how do you use it?
...st convert non-Numbers to Number, it converts them to Numbers that can be em>x m>pressed as 32-bit unsigned ints.
Although JavaScript's Numbers are double-precision floats(*), the bitwise operators (<<, >>, &, | and ~) are defined in terms of operations on 32-bit integers. Doing a bitwis...
c++11 Return value optimization or move? [duplicate]
...should use std::move and when I should let the compiler optimize... for em>x m>ample:
4 Answers
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How to display gpg key details without importing it?
...sa4096 2012-12-26 [S] [revoked: 2014-03-26]
sub rsa2048 2013-01-23 [S] [em>x m>pires: 2023-01-21]
sub rsa2048 2013-01-23 [E] [em>x m>pires: 2023-01-21]
sub rsa4096 2014-03-26 [S] [em>x m>pires: 2020-09-03]
sub rsa4096 2014-03-26 [E] [em>x m>pires: 2020-09-03]
sub rsa4096 2014-11-22 [A] [revoked: 2016-03-01]
s...
How to determine if binary tree is balanced?
...at into the programming language of your choice should be trivial.
Bonus em>x m>ercise: this naive code sketch traverses the tree far too many times when computing the heights. Can you make it more efficient?
Super bonus em>x m>ercise: suppose the tree is massively unbalanced. Like, a million nodes deep on ...
Can you do this HTML layout without using tables?
...
Em>x m>cept when you're using a table for presentational layout rather than tabular data just because it's easier at first pale, in which case you're headed down a dark and dangerous path.
– One Crayon
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