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How can I quantify difference between two images?
...the filesize as a hash and then compare just numbers with substraction. In my case I have 4 images, one of them is very simillar and the others 3 are absolutely different. Just scale to the same dimensions, to jpg and substract. Really Nice.
– Diego Andrés Díaz Espinoza
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How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throw
...nstead. See also How to insert uploaded image from p:fileUpload as BLOB in MySQL?
Another potential problem with native API will manifest is when the upload component is present in a form on which a different "regular" ajax request is fired which does not process the upload component. See also File...
How to avoid isset() and empty()
...o work with something that doesn't exist!", your reaction should be "Oops, my bad, let me fix that ASAP." How else are you going to tell the difference between "variables that work just fine undefined" and honestly wrong code that may lead to serious errors? This is also the reason why you always, a...
What is the difference between 'classic' and 'integrated' pipeline mode in IIS7?
...found out that it is less work to deploy with IIS7 set to integrated mode. My question is what is the difference? And what are the implications of using one or the other?
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How to get the input from the Tkinter Text Widget?
...a few more attributes to the normal .get() function. If we have a text box myText_Box, then this is the method for retrieving its input.
def retrieve_input():
input = self.myText_Box.get("1.0",END)
The first part, "1.0" means that the input should be read from line one, character zero (ie: th...
How do popular apps authenticate user requests from their mobile app to their server?
... non developers.
So now what... Am I doomed to the point I cannot protect my API server from being abused??? No quiet so... hope still exists!!!
Possible Solutions
Can someone tell me what method famous android applications like Facebook, FourSquare, or Twitter use to authenticate every request co...
What exactly is Hot Module Replacement in Webpack?
...sheet. You don't need to do anything special.
Suppose I want to update my CSS (one stylesheet) and JS modules when I save them to disk, without reloading the page and without using plugins such as LiveReload. Is this something Hot Module Replacement can help me with?
Yes
What kind of work ...
Can I set max_retries for requests.request?
... the answers here, I found a library called backoff that worked better for my situation. A basic example:
import backoff
@backoff.on_exception(
backoff.expo,
requests.exceptions.RequestException,
max_tries=5,
giveup=lambda e: e.response is not None and e.response.status_code < ...
Node.js and CPU intensive requests
...de Javascript but something is keeping me from starting to use Node.js for my web application.
5 Answers
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How to add a custom right-click menu to a webpage?
I want to add a custom right-click menu to my web application. Can this be done without using any pre-built libraries? If so, how to display a simple custom right-click menu which does not use a 3rd party JavaScript library?
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