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How to retrieve an element from a set without removing it?
Suppose the following:
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Why would iterating over a List be faster than indexing through it?
Reading the Java documentation for the ADT List it says:
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How to read a text file reversely with iterator in C#
I need to process a large file, around 400K lines and 200 M. But sometimes I have to process from bottom up. How can I use iterator (yield return) here? Basically I don't like to load everything in memory. I know it is more efficient to use iterator in .NET.
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How to list all methods for an object in Ruby?
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List columns with indexes in PostgreSQL
I would like to get the columns that an index is on in PostgreSQL.
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Select n random rows from SQL Server table
I've got a SQL Server table with about 50,000 rows in it. I want to select about 5,000 of those rows at random. I've thought of a complicated way, creating a temp table with a "random number" column, copying my table into that, looping through the temp table and updating each row with RAND() , and ...
Is Ruby pass by reference or by value?
@user object adds errors to the lang_errors variable in the update_lanugages method.
when I perform a save on the @user object I lose the errors that were initially stored in the lang_errors variable.
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How do I show a marker in Maps launched by geo URI Intent?
I have a application where I want to show different locations (one at the time, picked by user input) by launching Google Maps with their specific geo coordinates.
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Creating multiline strings in JavaScript
I have the following code in Ruby. I want to convert this code into JavaScript. what's the equivalent code in JS?
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Moving matplotlib legend outside of the axis makes it cutoff by the figure box
I'm familiar with the following questions:
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