Melany Doi

Not understanding a trick on .get() method in python

In Python, dictionaries are commonly accessed using keys. But what is the trick behind the .get() method, and how does it differ from directly accessing a key? Understanding .get() helps you handle missing keys gracefully and avoid errors. 1. Basic Usage of .get() .get(key) retrieves the value for a given key. If the…

Python

Answered Sep 26, 2025 · 588 Views Read answer →

Delete an element from a dictionary

One of the most straightforward methods is using the del keyword. This allows you to remove a specific key-value pair by specifying the key. For example: my_dict = {"a": 1, "b": 2, "c": 3} del my_dict["b"]Now, my_dict will only contain {"a": 1, "c": 3}. Another useful method is .pop(), which removes the specified key…

Python

Answered Sep 16, 2025 · 910 Views Read answer →

How can I remove a specific item from an array in JavaScript?

Removing a specific item from an array in JavaScript is something almost every developer needs to do — and thankfully, JavaScript gives you a few handy ways to do it, depending on the situation. Let’s say you have an array like this: let fruits = ['apple', 'banana', 'orange', 'banana'];And you want to remove 'banana'.…

Java

Answered Apr 7, 2025 · 621 Views Read answer →

How do you evaluate the performance of your models

Evaluating the performance of machine learning models is essential to ensure their effectiveness and reliability. Different metrics are used depending on the type of problem (classification or regression) and the objectives. For classification tasks, here are the key evaluation metrics: Accuracy: Description: Measures…

Data Science

Answered Dec 26, 2024 · 657 Views Read answer →

I've been using this for some time: SUBSTRING(str_col, PATINDEX('%[^0]%', str_col), LEN(str_col))

SQL Server

Answered Mar 15, 2021 · 1.2K Views Read answer →

What is the motivation behind the Step Definition file in Cucumber?

A step definition file in Cucumber is utilized to isolate the component records from the fundamental code. Each progression of the element record can be mapped to a comparing strategy on the Step Definition document. While feature files are written in an effectively reasonable language, for example, Gherkin, Step…

QA Testing

Answered Jan 4, 2020 · 1.4K Views Read answer →

What is Parsing?

It is a process that understands a sentence based on the grammar used.POS tagging is a subset of parsing where it categorizes words into their correct parts of speech. Parsing analyzes a set of words to extract their correct form according to the rules of grammar. The parser works in a sentence or any text body in the…

Data Science

Answered Nov 28, 2019 · 1.7K Views Read answer →

Differentiate between Static testing and Dynamic testing w.r.t SDLC?

There are differences between static testing and dynamic testing available on the internet. Let’s not talk about those testing differences as they provided you definition-based explanation. Let’s associate this with SDLC to understand the structural relationship of Static and Dynamic testing w.r.t to SDLC and…

QA Testing

Answered Nov 20, 2019 · 1.6K Views Read answer →

State relationship of Static testing w.r.t SDLC and verification?

We know that SDLC comprises of different stages as below: Requirement Analysis → Feasibility Study → Design → Coding → Testing → Installation → Maintenance. Phases till Coding stage are known as verification phases. Every testing that we do in verification phases of SDLC starting from requirement analysis phase to…

QA Testing

Answered Nov 20, 2019 · 1.4K Views Read answer →

What are the different types of POS tagging technique?

Some of the most important types of POS tagging techniques are a) Rule Based Methods. b) Lexical Based Methods. c) Probabilistic methods. d) Deep learning methods.

Data Science

Answered Nov 10, 2019 · 1.4K Views Read answer →