HTTPS connections over proxy servers

TLS/SSL (The S in HTTPS) guarantees that there are no eavesdroppers between you and the server you are contacting, i.e. no proxies. Normally, you use CONNECT to open up a TCP connection through the proxy. In this case, the proxy will not be able to cache, read, or modify any requests/responses, and therefore be rather useless. If … Read more

What does the “map” method do in Ruby?

The map method takes an enumerable object and a block, and runs the block for each element, outputting each returned value from the block (the original object is unchanged unless you use map!): Array and Range are enumerable types. map with a block returns an Array. map! mutates the original array. Where is this helpful, and what is the difference between map! and each? Here is an example: … Read more

How do I upgrade to Python 3.6 with conda?

Anaconda has not updated python internally to 3.6. a) Method 1 If you wanted to update you will type conda update python To update anaconda type conda update conda If you want to upgrade between major python version like 3.5 to 3.6, you’ll have to do conda install python=$pythonversion$ b) Method 2 – Create a new environment … Read more

Asking the user for input until they give a valid response

The simplest way to accomplish this is to put the input method in a while loop. Use continue when you get bad input, and break out of the loop when you’re satisfied. When Your Input Might Raise an Exception Use try and except to detect when the user enters data that can’t be parsed. Implementing Your Own Validation Rules If you want to reject values … Read more

Rock, Paper, Scissors Game Java

I would recommend making Rock, Paper and Scissors objects. The objects would have the logic of both translating to/from Strings and also “knowing” what beats what. The Java enum is perfect for this. The parseType method can return null if the String is not a valid type. And you code can check if the value is null and if … Read more

Image is not showing in browser?

I find out the way how to set the image path just remove the “/” before the destination folder as “images/66.jpg” not “/images/66.jpg” And its working fine for me.

PowerShell and the -contains operator

The -Contains operator doesn’t do substring comparisons and the match must be on a complete string and is used to search collections. From the documentation you linked to: -Contains Description: Containment operator. Tells whether a collection of reference values includes a single test value. In the example you provided you’re working with a collection containing just one string … Read more