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How do you get the “object reference” of an object in java when toString() and hashCode() have been
... distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the Java™ programming language.)
So if you are using hashCode() to find out if it is a unique object in m...
const vs constexpr on variables
... go (tested each of them before posting). However my compiler does let me convert PI1 to a compile-time integral constant for use in an array, but not for use as a non-type integral template parameter. So the compile-time convertibility of PI1 to an integral type seems a little hit & miss to m...
How do I apply the for-each loop to every character in a String?
...
You need to convert the String object into an array of char using the toCharArray() method of the String class:
String str = "xyz";
char arr[] = str.toCharArray(); // convert the String object to array of char
// iterate over the array...
Sort points in clockwise order?
...y done in any language. The formulas can be found in this section.
After converting to polar coordinates, just sort by the angle, theta.
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Why doesn't os.path.join() work in this case?
...t:
config_root = "/etc/myapp.conf/"
file_name = os.path.join(config_root, sys.argv[1])
If the application is executed with:
$ myapp foo.conf
The config file /etc/myapp.conf/foo.conf will be used.
But consider what happens if the application is called with:
$ myapp /some/path/bar.conf
Then ...
Converting 'ArrayList to 'String[]' in Java
How might I convert an ArrayList<String> object to a String[] array in Java?
16 Answers
...
Get number of digits with JavaScript
...y What's going on here. toString() and String() same build-in function for converting digit to string, once we converted then we'll find the length of the string by build-in function length
setuptools vs. distutils: why is distutils still a thing?
...t's one reason. The following is straight from the NumPy setup.py:
if len(sys.argv) >= 2 and ('--help' in sys.argv[1:] or
sys.argv[1] in ('--help-commands', 'egg_info', '--version',
'clean')):
# Use setuptools for these commands (they don't work well or at all...
How to merge dictionaries of dictionaries?
... recursive function is easiest:
def merge(a, b, path=None):
"merges b into a"
if path is None: path = []
for key in b:
if key in a:
if isinstance(a[key], dict) and isinstance(b[key], dict):
merge(a[key], b[key], path + [str(key)])
elif a[k...
Exif manipulation library for python [closed]
...
Use PIL :)
import os,sys
from PIL import Image
from PIL.ExifTags import TAGS
if __name__ == '__main__':
for (k,v) in Image.open(sys.argv[1])._getexif().iteritems():
print '%s = %s' % (TAGS.get(k), v)
os.system('pause')
...