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Why use double indirection? or Why use pointers to pointers?
When should a double indirection be used in C? Can anyone explain with a example?
18 Answers
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counting number of directories in a specific directory
How to count the number of folders in a specific directory. I am using the following command, but it always provides an extra one.
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Difference between
What is the difference between List<? super T> and List<? extends T> ?
14 Answers
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Which equals operator (== vs ===) should be used in JavaScript comparisons?
I'm using JSLint to go through JavaScript, and it's returning many suggestions to replace == (two equals signs) with === (three equals signs) when doing things like comparing idSele_UNVEHtype.value.length == 0 inside of an if statement.
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How to apply a function to two columns of Pandas dataframe
Suppose I have a df which has columns of 'ID', 'col_1', 'col_2' . And I define a function :
12 Answers
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Display name of the current file in vim?
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How to get a list of all files that changed between two Git commits?
Due to bureaucracy, I need to get a list of all changed files in my repository for a report (I started with existing source code).
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What does “Memory allocated at compile time” really mean?
In programming languages like C and C++, people often refer to static and dynamic memory allocation. I understand the concept but the phrase "All memory was allocated (reserved) during compile time" always confuses me.
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How do I check if a number is positive or negative in C#?
How do I check if a number is positive or negative in C#?
17 Answers
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Rails raw SQL example
How can I convert this code to raw sql and use in rails? Because When I deploy this code in heroku,there is a request timeout error.I think this will be faster if I use raw sql.
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