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Python OpenCV2 (cv2) wrapper to get image size?
... import numpy as np
>>> import cv2
>>> img = cv2.imread('foo.jpg')
>>> height, width, channels = img.shape
>>> print height, width, channels
600 800 3
In case you were working with binary images, img will have two dimensions, and therefore you must change the ...
Reliable way for a Bash script to get the full path to itself [duplicate]
...../dir2/dir3/../script
When called from symlink
When symlink is nested eg) foo->dir1/dir2/bar bar->./../doe doe->script
When caller changes the scripts name
I am looking for corner cases where this code does not work. Please let me know.
Code
pushd . > /dev/null
SCRIPT_PATH="${BASH_S...
Pagination in a REST web application
...
Seeing page as resource probably should introduce POST /foo/page to create a new page, right?
– temoto
Dec 4 '09 at 19:37
18
...
What are the most common naming conventions in C?
...show(), tracking_order_process().
Pointers: nothing fancy here:
GtkWidget *foo, TrackingOrder *bar.
Global variables: just don't use global variables. They are evil.
Functions that are there, but
shouldn't be called directly, or have
obscure uses, or whatever: one or more
underscores at the beginnin...
What is __pycache__?
...ess it by starting the interpreter with the -B flag, for example
python -B foo.py
Another option, as noted by tcaswell, is to set the environment variable PYTHONDONTWRITEBYTECODE to any value (according to python's man page, any "non-empty string").
...
Most efficient way to remove special characters from string
... be impacting things slightly (ie/ the other solutions would have an inner foo
psycopg2: insert multiple rows with one query
...a", "last_name":"Drake"},
{"first_name":"Steven", "last_name":"Foo"},
{"first_name":"David", "last_name":"Bar"})
You could easily insert all three rows within the dictionary by using:
cur = conn.cursor()
cur.executemany("""INSERT INTO bar(first_name,last_name) VALUES ...
Sphinx autodoc is not automatic enough
...esult on ReadTheDocs):
mytoolbox
|-- mypackage
| |-- __init__.py
| |-- foo.py
| |-- mysubpackage
| |-- __init__.py
| |-- bar.py
|-- doc
| |-- source
| |--index.rst
| |--conf.py
| |-- _templates
| |-- custom-module-template.rst
| |-- custom-cl...
Recommended SQL database design for tags or tagging [closed]
...free text fields and there is no expected operation like 'rename all tags "foo" to "bar"'.
So tldr: I would go for the two-table solution. (In fact I'm going to. I found this article to see if there are valid arguments against it.)
...
What is a segmentation fault?
...o write to a portion of memory that was marked as read-only:
char *str = "Foo"; // Compiler marks the constant string as read-only
*str = 'b'; // Which means this is illegal and results in a segfault
Dangling pointer points to a thing that does not exist any more, like here:
char *p = NULL;
{
...