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How to produce a range with step n in bash? (generate a sequence of numbers with increments)
The way to iterate over a range in bash is
5 Answers
5
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Clojure: reduce vs. apply
... of caching kick in between reduce and apply.
user=> (time (reduce + (range 1e3)))
"Elapsed time: 5.543 msecs"
499500
user=> (time (apply + (range 1e3)))
"Elapsed time: 5.263 msecs"
499500
user=> (time (apply + (range 1e4)))
"Elapsed time: 19.721 msecs"
49995000
user=> (time (reduce +...
How to cherry-pick multiple commits
...
Git 1.7.2 introduced the ability to cherry pick a range of commits. From the release notes:
git cherry-pick learned to pick a range of commits
(e.g. cherry-pick A..B and cherry-pick --stdin), so did git revert; these do not support the nicer sequencing control rebase [...
What is Scala's yield?
...rict):
scala> var found = false
found: Boolean = false
scala> List.range(1,10).filter(_ % 2 == 1 && !found).foreach(x => if (x == 5) found = true else println(x))
1
3
7
9
scala> found = false
found: Boolean = false
scala> Stream.range(1,10).filter(_ % 2 == 1 && !fo...
Pretty-print C++ STL containers
... times, and we have decided to call the main class that wraps a collection RangePrinter
This should work automatically with any collection once you have written the one-time operator<< overload, except that you will need a special one for maps to print the pair, and may want to customise the ...
When to use PNG or JPG in iPhone development?
...ession requires "very little" energy; the Other.artwork file appears to be raw bitmap data, presumably because the CPU/memory overhead of PNG decompression is too much for commonly-used UI components.
– tc.
Oct 14 '10 at 2:06
...
Merge PDF files
... for reader in map(PdfFileReader, input_streams):
for n in range(reader.getNumPages()):
writer.addPage(reader.getPage(n))
writer.write(output_stream)
finally:
for f in input_streams:
f.close()
if __name__ == '__main__':
if sys.plat...
how to listen to N channels? (dynamic select statement)
...g like this:
cases := make([]reflect.SelectCase, len(chans))
for i, ch := range chans {
cases[i] = reflect.SelectCase{Dir: reflect.SelectRecv, Chan: reflect.ValueOf(ch)}
}
chosen, value, ok := reflect.Select(cases)
// ok will be true if the channel has not been closed.
ch := chans[chosen]
msg :...
How do I write output in same place on the console?
... 'Downloading File FooFile.txt [%d%%]\r'%i,
Demo:
import time
for i in range(100):
time.sleep(0.1)
print 'Downloading File FooFile.txt [%d%%]\r'%i,
Python 3
print('Downloading File FooFile.txt [%d%%]\r'%i, end="")
Demo:
import time
for i in range(100):
time.sleep(0.1)
prin...
Excel Date to String conversion
...
Here is a VBA approach:
Sub change()
toText Sheets(1).Range("A1:F20")
End Sub
Sub toText(target As Range)
Dim cell As Range
For Each cell In target
cell.Value = cell.Text
cell.NumberFormat = "@"
Next cell
End Sub
If you are looking for a solution witho...