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How can I match a string with a regex in Bash?
...n the comment above, We need to store the regex on a var
The variable BASH_REMATCH is set after you match the expression, and ${BASH_REMATCH[n]} will match the nth group wrapped in parentheses ie in the following ${BASH_REMATCH[1]} = "compressed" and ${BASH_REMATCH[2]} = ".gz"
if [[ "compressed.gz...
What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?
...chain referring back to an earlier object.
It is for this reason that the __unsafe_unretained and __weak ownership qualifiers exist. The former will not retain any object it points to, but leaves open the possibility of that object going away and it pointing to bad memory, whereas the latter doesn...
How to get a time zone from a location using latitude and longitude coordinates?
...rces of time zone boundary data, but are no longer actively maintained.
tz_world - the original shapefile data from Eric Muller
whereonearth-timezone - GeoJSON version with WOEDB data merged in
Time Zone Geolocation Offline Implementations
Implementations that use the Timezone Boundary Builder dat...
Mocking Extension Methods with Moq
... DoWorkMethod
{
[ExcludeFromCodeCoverage]
get { return _DoWorkMethod ?? (_DoWorkMethod = (obj, val) => { return obj.DoWork(val); }); }
set { _DoWorkMethod = value; }
} private Func<IMyObject, string, object> _DoWorkMethod;
Then you call the Func instead of ...
How to forward declare a template class in namespace std?
...served for use by the implementation, so you should use something like TEST_H instead of __TEST__. It's not going to generate a warning or an error, but if your program has a clash with an implementation-defined identifier, then it's not guaranteed to compile or run correctly: it's ill-formed. Also ...
What is the difference between Θ(n) and O(n)?
...
one is Big "O"
one is Big Theta
http://en.wikipedia.org/wiki/Big_O_notation
Big O means your algorithm will execute in no more steps than in given expression(n^2)
Big Omega means your algorithm will execute in no fewer steps than in the given expression(n^2)
When both condition are tru...
How to parse unix timestamp to time.Time
...ut:
2014-07-16 20:55:46 +0000 UTC
Playground: http://play.golang.org/p/v_j6UIro7a
Edit:
Changed from strconv.Atoi to strconv.ParseInt to avoid int overflows on 32 bit systems.
share
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improve t...
Expand a random range from 1–5 to 1–7
...Here is a Python implementation, with a test harness:
import random
rand5_calls = 0
def rand5():
global rand5_calls
rand5_calls += 1
return random.randint(0, 4)
def rand7_gen():
state = 0
pow5 = 1
pow7 = 7
while True:
if state / pow5 == (state + pow7) / pow5:
...
What does O(log n) mean exactly?
...) definition which finally makes sense. +1
– iAteABug_And_iLiked_it
Aug 30 '13 at 17:19
...
Read text file into string array (and write)
...n err
}
defer file.Close()
w := bufio.NewWriter(file)
for _, line := range lines {
fmt.Fprintln(w, line)
}
return w.Flush()
}
func main() {
lines, err := readLines("foo.in.txt")
if err != nil {
log.Fatalf("readLines: %s", err)
}
for i, line :...