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How to check if a map contains a key in Go?
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One line answer:
if val, ok := dict["foo"]; ok {
//do something here
}
Explanation:
if statements in Go can include both a condition and an initialization statement. The example above uses both:
initializes two variables...
Get the first item from an iterable that matches a condition
I would like to get the first item from a list matching a condition. It's important that the resulting method not process the entire list, which could be quite large. For example, the following function is adequate:
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What are the pros and cons to keeping SQL in Stored Procs versus Code [closed]
What are the advantages/disadvantages of keeping SQL in your C# source code or in Stored Procs? I've been discussing this with a friend on an open source project that we're working on (C# ASP.NET Forum). At the moment, most of the database access is done by building the SQL inline in C# and calling ...
How to check if one of the following items is in a list?
I'm trying to find a short way to see if any of the following items is in a list, but my first attempt does not work. Besides writing a function to accomplish this, is the any short way to check if one of multiple items is in a list.
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Is it better to use std::memcpy() or std::copy() in terms to performance?
...better to use memcpy as shown below or is it better to use std::copy() in terms to performance? Why?
8 Answers
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Why doesn't Java offer operator overloading?
Coming from C++ to Java, the obvious unanswered question is why didn't Java include operator overloading?
16 Answers
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Simple explanation of MapReduce?
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Going all the way down to the basics for Map and Reduce.
Map is a function which "transforms" items in some kind of list to another kind of item and put them back in the same kind of list.
suppose I have a list of numbers: ...
Where IN clause in LINQ [duplicate]
How to make a where in clause similar to one in SQL Server?
8 Answers
8
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Why are there two ways to unstage a file in Git?
... a file, it actually stages the removal of the file(s) from the repo (assuming it was already committed before) but leaves the file in your working tree (leaving you with an untracked file).
git reset -- <filePath> will unstage any staged changes for the given file(s).
That said, if you used...
Perforce for Git users? [closed]
...here is a lot of "Git for Perforce users" documentation out there, but seemingly very little of the opposite.
3 Answers
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