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surface plots in matplotlib
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For surfaces it's a bit different than a list of 3-tuples, you should pass in a grid for the domain in 2d arrays.
If all you have is a list of 3d points, rather than some function f(x, y) -> z, then you will have a problem because there are mult...
Exclude a sub-directory using find
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Explanation:
find /home/feeds/data: start finding recursively from specified path
-type f: find files only
-not -path "*def/incoming*": don't include anything with def/incoming as part of its path
-not -path "*456/incoming*": don't include anything with 456/incoming as part of its path
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const char* concatenation
... hard coded array size. That's a really bad habit to get into, especially if you don't know what size "one" and "two" are.
– Paul Tomblin
Jan 3 '10 at 15:58
1
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Iterate through every file in one directory
... do something like this:
Dir.foreach('/path/to/dir') do |filename|
next if filename == '.' or filename == '..'
# Do work on the remaining files & directories
end
Dir::foreach and Dir::entries (as well as Dir::each_child and Dir::children) also include hidden files & directories. Often...
How to delete migration files in Rails 3
...rsion before the one I want to delete.
Delete the migration file manually.
If there are pending migrations (i.e., the migration I removed was not the last one), I just perform a new rake db:migrate again.
If your application is already on production or staging, it's safer to just write another mig...
How to make the division of 2 ints produce a float instead of another int?
...y automatically cast to a float by the compiler because the rules say that if either operand is of floating point type then the operation will be a floating point operation, even if the other operand is integral. Java Language Specification, §4.2.4 and §15.17
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When do I need to use a semicolon vs a slash in Oracle SQL?
...nd executing a DML statement) can be picked out more easily by eye.
Also, if you eventually move to something like Ant for deployment it will simplify the definition of targets to have a consistent statement delimiter.
shar...
Case preserving substitute in Vim
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This plugin doesn't seem to work for me. If I a word like BadJob and I want to replace it with GoodJob, I can't use %S/badjob/goodjob/g. It fails to detect a match.
– Roymunson
Jul 16 '19 at 23:47
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Using scp to copy a file to Amazon EC2 instance?
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Try specifying the user to be ec2-user, e.g.
scp -i myAmazonKey.pem phpMyAdmin-3.4.5-all-languages.tar.gz ec2-user@mec2-50-17-16-67.compute-1.amazonaws.com:~/.
See Connecting to Linux/UNIX Instances Using SSH.
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What is the difference between and ?
What is the difference between <html lang="en"> and <html lang="en-US"> ? What other values can follow the dash?
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