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Uploading base64 encoded Image to Amazon S3 via Node.js
...e file
buf = Buffer.from(req.body.imageBinary.replace(/^data:image\/\w+;base64,/, ""),'base64')
var data = {
Key: req.body.userId,
Body: buf,
ContentEncoding: 'base64',
ContentType: 'image/jpeg'
};
s3Bucket.putObject(data, function(err, data){
if (err) {
cons...
How do I create a URL shortener?
... MySQL table for example).
For this example, I will use 12510 (125 with a base of 10).
Now you have to convert 12510 to X62 (base 62).
12510 = 2×621 + 1×620 = [2,1]
This requires the use of integer division and modulo. A pseudo-code example:
digits = []
while num > 0
remainder = modulo(n...
Break promise chain and call a function based on the step in the chain where it is broken (rejected)
...then(stepTwo).then(null, handleErrorOne)
Angular's promise library $q is based on kriskowal's Q library (which has a richer API, but contains everything you can find in $q). Q's API docs on GitHub could prove useful. Q implements the Promises/A+ spec, which goes into detail on how then and the pro...
How to upload a file in Django? [closed]
...al-django-file-upload-example/
src/
myproject/
database/
sqlite.db
media/
myapp/
templates/
myapp/
list.html
forms.py
models.py
...
A simple explanation of Naive Bayes Classification
...or which they may classify or predict etc (in case of supervised learning) based on their learning. This is what most of the Machine Learning techniques like Neural Networks, SVM, Bayesian etc. are based upon.
So in a general Machine Learning project basically you have to divide your input set to a...
Visual Studio 64 bit?
Is there any 64 bit Visual Studio at all? Why not?
5 Answers
5
...
Create a submodule repository from a folder and keep its git commit history
...t repository A> so history for this folder is only there once.
This is based on Removing sensitive data from github.
Go to a new folder and
git clone <git repository A url>
cd <git repository A directory>
git filter-branch --force --index-filter 'git rm --cached --ignore-unmatch &l...
What would cause an algorithm to have O(log n) complexity?
...f this.
Processing values one digit at a time
How many digits are in the base-10 number n? Well, if there are k digits in the number, then we'd have that the biggest digit is some multiple of 10k. The largest k-digit number is 999...9, k times, and this is equal to 10k + 1 - 1. Consequently, if...
Why is this jQuery click function not working?
...
The document ready function sets up the listeners based on what it finds on the page. If you don't do this, they are never set up. The best way to do this, however, is to delegate them with the "on()" function, instead. That way any elements added to the page after load w...
How to repair a serialized string which has been corrupted by an incorrect byte count length?
...nt, $rlength ), PHP_EOL;
}
}
}
A better way to save to Database
$toDatabse = base64_encode(serialize($data)); // Save to database
$fromDatabase = unserialize(base64_decode($data)); //Getting Save Format
...