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Checking images for similarity with OpenCV
...he OpenCV Q&A site I am talking about the difference between feature descriptors, which are great when comparing whole images and texture descriptors, which are used to identify objects like human faces or cars in an image.
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Global variables in Javascript across multiple files
A bunch of my JavaScript code is in an external file called helpers.js. Inside the HTML that calls this JavaScript code I find myself in need of knowing if a certain function from helpers.js has been called.
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Can I 'git commit' a file and ignore its content changes?
...pied into the ignored name and modified. The repository can even include a script to treat the sample file as a template, modifying and copying it automatically.
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Local variables in nested functions
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I banged my head on this wall for 3 hours today on a script for work. Your last point is very important, and is the main reason why I encountered this problem. I have callbacks with closures galore throughout my code, but trying the same technique in a loop is what got me.
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How do I know which version of Javascript I'm using?
I'm just reading this documentation about Javascript 1.2, but I'm wondering which version of Javascript is being used in the most popular browsers.
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When should Flask.g be used?
...ss to any request object (e.g. when running batch DB operations in a shell script). If you try and extend the application context to encompass more than one request context, you're asking for trouble. So, rather than my test above, you should instead write code like this with Flask's contexts:
from...
Exporting data In SQL Server as INSERT INTO
...ght click on the database, right-click and pick "Tasks" and then "Generate Scripts".
This will allow you to generate scripts for a single or all tables, and one of the options is "Script Data". If you set that to TRUE, the wizard will generate a script with INSERT INTO () statement for your data.
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What are the best practices for JavaScript error handling?
I'm looking to start making my JavaScript a bit more error proof, and I'm finding plenty of documentation on using try , catch , finally , and throw , but I'm not finding a ton of advice from experts on when and where to throw errors.
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How do I run a Python program in the Command Prompt in Windows 7?
... the Python documentation, and testing on my own, to finally get my Python scripts working smoothly on my Windows machines (WinXP and Win7). So, I just blogged about it and am pasting that below in case it's useful to others. Sorry it's long, and feel free to improve it; I'm no expert.
[UPDATE: Pyt...
How do I check if a string is valid JSON in Python?
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Example Python script returns a boolean if a string is valid json:
import json
def is_json(myjson):
try:
json_object = json.loads(myjson)
except ValueError as e:
return False
return True
Which prints:
print is_json("{}") ...