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In Python, using argparse, allow only positive integers
...u:
def check_positive(value):
ivalue = int(value)
if ivalue <= 0:
raise argparse.ArgumentTypeError("%s is an invalid positive int value" % value)
return ivalue
parser = argparse.ArgumentParser(...)
parser.add_argument('foo', type=check_positive)
This is basically just an a...
Advantages of Binary Search Trees over Hash Tables
...ry than they need to.
For instance, if a hash function has a range R(h) = 0...100, then you need to allocate an array of 100 (pointers-to) elements, even if you are just hashing 20 elements. If you were to use a binary search tree to store the same information, you would only allocate as much space...
How to make/get a multi size .ico file? [closed]
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answered May 30 '12 at 15:43
Greg WoodsGreg Woods
2,57122 gold badges2121 silver badges1818 bronze badges
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Truncate a string straight JavaScript
... = 3;
var myString = "ABCDEFG";
var myTruncatedString = myString.substring(0,length);
// The value of myTruncatedString is "ABC"
So in your case:
var length = 3; // set to the number of characters you want to keep
var pathname = document.referrer;
var trimmedPathname = pathname.substring(0, Math...
How to hide one item in an Android Spinner
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50
To hide an arbitrary item or more than one item I think that you can implement your own adapter ...
How to assert two list contain the same elements in Python? [duplicate]
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edited Aug 10 '18 at 16:44
kmad1729
1,05411 gold badge1010 silver badges1919 bronze badges
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About catching ANY exception
... int(s.strip())
except IOError as (errno, strerror):
print "I/O error({0}): {1}".format(errno, strerror)
except ValueError:
print "Could not convert data to an integer."
except:
print "Unexpected error:", sys.exc_info()[0]
raise
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Does “git fetch --tags” include “git fetch”?
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Note: starting with git 1.9/2.0 (Q1 2014), git fetch --tags fetches tags in addition to what are fetched by the same command line without the option.
See commit c5a84e9 by Michael Haggerty (mhagger):
Previously, fetch's "--tags" option was considered...
How to set a default value with Html.TextBoxFor?
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you can try this
<%= Html.TextBoxFor(x => x.Age, new { @Value = "0"}) %>
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Rails 4: assets not loading in production
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105
In rails 4 you need to make the changes below:
config.assets.compile = true
config.assets.prec...