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How do you find the disk size of a Postgres / PostgreSQL table and its indexes
I'm coming to Postgres from Oracle and looking for a way to find the table and index size in terms of bytes/MB/GB/etc , or even better the size for all tables. In Oracle I had a nasty long query that looked at user_lobs and user_segments to give back an answer.
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I can’t find the Android keytool
I am trying to follow the Android mapping tutorial and got to this part where I had to get an API key .
10 Answers
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How to plot two histograms together in R?
I am using R and I have two data frames: carrots and cucumbers. Each data frame has a single numeric column which lists the length of all measured carrots (total: 100k carrots) and cucumbers (total: 50k cucumbers).
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Check if a Bash array contains a value
In Bash, what is the simplest way to test if an array contains a certain value?
35 Answers
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How to construct a timedelta object from a simple string
I'm writing a function that needs a timedelta input to be passed in as a string. The user must enter something like "32m" or "2h32m", or even "4:13" or "5hr34m56s"... Is there a library or something that has this sort of thing already implemented?
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Get environment variable value in Dockerfile
I'm building a container for a ruby app. My app's configuration is contained within environment variables (loaded inside the app with dotenv ).
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How to convert from System.Enum to base integer?
I'd like to create a generic method for converting any System.Enum derived type to its corresponding integer value, without casting and preferably without parsing a string.
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How to generate the “create table” sql statement for an existing table in postgreSQL
I have created a table in postgreSQL. I want to look at the SQL statement used to create the table but cannot figure it out.
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Returning anonymous type in C#
I have a query that returns an anonymous type and the query is in a method. How do you write this:
15 Answers
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Is the practice of returning a C++ reference variable evil?
This is a little subjective I think; I'm not sure if the opinion will be unanimous (I've seen a lot of code snippets where references are returned).
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