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biggest integer that can be stored in a double
...iplied by 2exponent − 52. So with exponent 52 you can store all values from 252 through to 253 − 1. Then with exponent 53, the next number you can store after 253 is 253 + 1 × 253 − 52. So loss of precision first occurs with 253 + 1.
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Preview an image before it is uploaded
.... The most efficient way would be to use URL.createObjectURL() on the File from your <input>. Pass this URL to img.src to tell the browser to load the provided image.
Here's an example:
<input type="file" accept="image/*" onchange="loadFile(event)">
<img id="output"/>
<...
Storing Python dictionaries
...o write to a file:
import json
myfile.write(json.dumps(mydict))
To read from a file:
import json
mydict = json.loads(myfile.read())
myfile is the file object for the file that you stored the dict in.
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Android Facebook style slide
...he best menus I could come up with:
Android sliding menu demo
Screenshot from emulator (mid-scroll):
Screenshot from device (full-scroll). Note my icon is not as wide as the Facebook menu icon, so the menu view and 'app' view are not aligned.
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GitHub README.md center image
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This is from Github's support:
Hey Waldyr,
Markdown doesn't allow you to tweak alignment directly (see docs here: http://daringfireball.net/projects/markdown/syntax#img), but you can just use a raw HTML 'img' tag and do the alignmen...
node and Error: EMFILE, too many open files
...fs doesn't work... or you just want to understand where the leak is coming from. Follow this process.
(e.g. graceful-fs isn't gonna fix your wagon if your issue is with sockets.)
From My Blog Article: http://www.blakerobertson.com/devlog/2014/1/11/how-to-determine-whats-causing-error-connect-emfile...
Pretty printing XML in Python
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Not a fan of redefining xml there from being a module to the output object, but the method otherwise works. I'd love to find a nicer way to go from the core etree to pretty printing. While lxml is cool, there are times when I'd prefer to keep to the core if I...
“git pull” or “git merge” between master and development branches
...d a develop branch for working on a few changes. I need to merge changes from master into develop , but will eventually merge everything from develop into master . I have two different workflows in mind:
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How does the “final” keyword in Java work? (I can still modify an object.)
...tability; this is achieved by carefully designing the object, and is a far-from-trivial endeavor.
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CSS scrollbar style cross browser [duplicate]
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Everyone would like it. The single smart idea coming from the IE era ?
– Ben
Jan 15 '14 at 16:36
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