While answering this question, make sure to keep your explanation concise on how you would bring about a plan that works with the company set up and how you would implement the plan, ensuring that it works by first understanding the cloud infrastructure setup of the company, and you would al...
It’s a great design question and asked a lot in java interviews. This post provides all the differences between abstract class and interface. When should we use interface over the abstract class and vice versa? The post also explains how to use abstract class and interface to create a flexi...
Question 23: What emerging trends in AWS or DevOps do you think will have the biggest impact in the next few years? Some emerging trends that could have a significant impact include: Serverless computing: Continued growth of services like AWS Lambda and EventBridge. AI/ML in operations: Increa...
Functions can return a value using the “return” keyword, and can be called by their name followed by parentheses, optionally passing arguments. Python also supports anonymous functions, called “lambda” functions, which are defined using the “lambda” keyword and have a concise syntax. Function...
This comprehensive built-in functionality reduces the reliance on external libraries and aids in saving development time. 24. What is the lambda function in Python? Lambda functions, also known as anonymous functions, are small, single-expression functions without a name. They are defined using the...
Please refer earlier question for these rules. - If a class field is not used in equals(), you should not use it in hashCode() method. - Best practice for user defined key class is to make it immutable, so that hashCode() value can be cached for fast performance. Also immutable ...
And that was my original question. Well, it depends on the context, when you're using the XML attribute of android:id, then you're specifying a new id, and are instructing the parser (or call it the builder) to create a new entry in R.java, thus you have to include a + sign. ...
join(map(lambda x: x[0] + str(x[1]), Counter("AAABBCCAC").most_common()))41.super函数的具体用法和场景https://python3-cookbook.readthedocs.io/zh_CN/latest/c08/p07_calling_method_on_parent_class.htmlPython高级元类42.Python中类方法、类实例方法、静态方法有何区别?类...
In solving this data analyst interview question, you’ll need to be fluent in using the following concepts: merge() lambda functions isna() unique() groupby() data aggregation Working with DataFrames Solution & Output Here’s how to solve this problem in Python. ...
def multi(): return [lambda x : i*x for i in range(4)] print([m(3) for m in multi()]) 正确答案是[9,9,9,9],而不是[0,3,6,9]产生的原因是Python的闭包的后期绑定导致的,这意味着在闭包中的变量是在内部函数被调用的时候被查找的,因为,最后函数被调用的时候,for循环已经完成, i 的值...