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Get Image size WITHOUT loading image into memory
...cstring for .open says:
def open(fp, mode="r"):
"Open an image file, without loading the raster data"
There are a few file operations in the source like:
...
prefix = fp.read(16)
...
fp.seek(0)
...
but these hardly constitute reading the whole file. In fact .open simply returns a file...
How to use Elasticsearch with MongoDB?
I have gone through many blogs and sites about configuring Elasticsearch for MongoDB to index Collections in MongoDB but none of them were straightforward.
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When to use enumerateObjectsUsingBlock vs. for
...o use and comes more naturally in the context.
While for(... in ...) is quite convenient and syntactically brief, enumerateObjectsUsingBlock: has a number of features that may or may not prove interesting:
enumerateObjectsUsingBlock: will be as fast or faster than fast enumeration (for(... in ......
_DEBUG vs NDEBUG
...n appropriate, ie _DEBUG if you want your debugging code to be consistent with the MS CRT debugging techniques and NDEBUG if you want to be consistent with assert().
If you define your own debugging macros (and you don't hack the compiler or C runtime), avoid starting names with an underscore, as t...
How to exit from Python without traceback?
I would like to know how to I exit from Python without having an traceback dump on the output.
10 Answers
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Debugging in Clojure? [closed]
...jure.tools.trace)
And you need to add the ^:dynamic to the function definition
(defn ^:dynamic fib[n] (if (< n 2) n (+ (fib (- n 1)) (fib (- n 2)))))
Then Bob is once again your uncle:
(clojure.tools.trace/dotrace [fib] (fib 3))
TRACE t4328: (fib 3)
TRACE t4329: | (fib 2)
TRACE t4330: | | ...
how to check if a file is a directory or regular file in python? [duplicate]
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os.path.isfile("bob.txt") # Does bob.txt exist? Is it a file, or a directory?
os.path.isdir("bob")
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Django set default form values
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You can use initial which is explained here
You have two options either populate the value when calling form constructor:
form = JournalForm(initial={'tank': 123})
or set the value in the form definition:
tank = forms.IntegerField(wid...
How can I setup & run PhantomJS on Ubuntu?
I set up PhantomJS and recorded it to video: https://www.dailymotion.com/video/xnizmh_1_webcam
25 Answers
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Difference between RegisterStartupScript and RegisterClientScriptBlock?
...closing </form> tag of the page and RegisterClientScriptBlock puts it right after the starting <form> tag of the page?
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