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How can I convert a zero-terminated byte array to string?
...ort "fmt"
func CToGoString(c []byte) string {
n := -1
for i, b := range c {
if b == 0 {
break
}
n = i
}
return string(c[:n+1])
}
func main() {
c := [100]byte{'a', 'b', 'c'}
fmt.Println("C: ", len(c), c[:4])
g := CToGoString(c[:])
...
Print a file's last modified date in Bash
...:
stat -f "%Sm" -t "%Y-%m-%d %H:%M" [filename]
If I want to run it on a range of files, I can do something like this:
#!/usr/bin/env bash
for i in /var/log/*.out; do
stat -f "%Sm" -t "%Y-%m-%d %H:%M" "$i"
done
This example will print out the last time I ran the sudo periodic daily weekly mon...
Maximum value for long integer
...not the best) would be
minval = a[0] # Just use the first value
for i in range(1, len(a)):
minval = min(a[i], a[i - 1])
Note that the above doesn't use MAXINT at all. That part of the solution applies to any programming language: You don't need to know the highest possible value just to find...
Why does appending “” to a String save memory?
...string method, Java does not create a trully new string, but just stores a range of characters inside the original string.
So, when you created a new string with this code:
this.smallpart = data.substring(12, 18) + "";
you actually created a new string when you concatenated the result with the ...
List comprehension in Ruby
...ay created on the fly with the following syntax:
squares = [x**2 for x in range(10)]
The following would be an analog in Ruby (the only adequate answer in this thread, AFAIC):
a = Array.new(4).map{rand(2**49..2**50)}
In the above case, I'm creating an array of random integers, but the block c...
What is the maximum value for an int32?
...
Tried calling it. It rang a few times then went to the error dial tone. =(
– Krythic
Feb 21 '16 at 3:52
add a comment
...
How do I format a number with commas in T-SQL?
...
Fiddle is broken, it now says String index out of range: 33
– Jeff Puckett
Oct 26 '16 at 20:14
1
...
How to add extension methods to Enums
...th: return dateTime.AddMonths(1);
default: throw new ArgumentOutOfRangeException("duration");
}
}
}
I think enums are not the best choice in general but at least this lets you centralize some of the switch/if handling and abstract them away a bit until you can do something better. R...
Create a .csv file with values from a Python list
...is the worked example for you:
import csv
data = ["value %d" % i for i in range(1,4)]
out = csv.writer(open("myfile.csv","w"), delimiter=',',quoting=csv.QUOTE_ALL)
out.writerow(data)
Produces:
"value 1","value 2","value 3"
...
Getting MAC Address
...
Or ':'.join(("%012X" % mac)[i:i+2] for i in range(0, 12, 2)) for an uppercase MAC with each byte separated by a colon.
– tomlogic
Nov 10 '14 at 17:21
...