Julia Cheat Sheet



Julia Cheat Sheet
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References for various things associated with unicode in Vim, Python, Julia and Rust. My Unicode cheat sheet. By: blogs tagged with `julia`. Haskell Cheat Sheet This cheat sheet lays out the fundamental ele-ments of the Haskell language: syntax, keywords and other elements. It is presented as both an ex-ecutable Haskell file and a printable document. Load the source into your favorite interpreter to play with code samples shown. Basic Syntax Comments.

Julia Cheat Sheet

Dependencies and Setup¶

In the Python code we assume that you have already run importnumpyasnp

In the Julia, we assume you are using v1.0.2 or later with Compat v1.3.0 or later and have run usingLinearAlgebra,Statistics,Compat

Creating Vectors¶

Operation

MATLAB

Python

Julia

Row vector: size (1, n)

Column vector: size (n, 1)

1d array: size (n, )

Not possible

or

Integers from j to n withstep size k

Linearly spaced vectorof k points

Creating Matrices¶

Julia Syntax Cheat Sheet

Operation

MATLAB

Python

Julia

Create a matrix

2 x 2 matrix of zeros

2 x 2 matrix of ones

2 x 2 identity matrix

Diagonal matrix

Uniform random numbers

Normal random numbers

Sparse Matrices

Tridiagonal Matrices

Manipulating Vectors and Matrices¶

Operation

MATLAB

Python

Julia

Transpose

Complex conjugate transpose(Adjoint)

Concatenate horizontally

or

or

Concatenate vertically

or

or

Reshape (to 5 rows, 2 columns)

Convert matrix to vector

Flip left/right

Flip up/down

Repeat matrix (3 times in therow dimension, 4 times in thecolumn dimension)

Preallocating/Similar

N/A similar type

Broadcast a function over acollection/matrix/vector

Functions broadcast directly

Functions broadcast directly

Accessing Vector/Matrix Elements¶

Operation

MATLAB

Python

Julia

Access one element

Access specific rows

Access specific columns

Remove a row

Diagonals of matrix

Get dimensions of matrix

Mathematical Operations¶

Operation

MATLAB

Python

Julia

Dot product

Matrix multiplication

Inplace matrix multiplication

Not possible

Element-wise multiplication

Matrix to a power

Matrix to a power, elementwise

Inverse

or

or

Determinant

Eigenvalues and eigenvectors

Euclidean norm

Solve linear system(Ax=b) (when (A)is square)

Solve least squares problem(Ax=b) (when (A)is rectangular)

Sum / max / min¶

Operation

MATLAB

Python

Julia

Sum / max / min ofeach column

Sum / max / min of each row

Sum / max / min ofentire matrix

Cumulative sum / max / minby row

Cumulative sum / max / minby column

Julia cheat sheet

Programming¶

Operation

MATLAB

Python

Julia

Comment one line

Comment block

For loop

While loop

If

If / else

Print text and variable

Function: anonymous

Function

Tuples

Can use cells but watch performance

Named Tuples/Anonymous Structures

Closures

Inplace Modification

No consistent or simple syntaxto achieve this

Julia Quinn had no idea that theBridgerton series on Netflix would blow up as massively as it did. The 51-year-old author wasn’t even trying to turn her novels into a TV series when they fell into the hands of Shonda Rhimes. Quinn has strong feelings about her favorite character in Bridgerton, but it’s not the Duke of Hastings (Regé-Jean Page).

Julia Quinn on how the ‘Bridgerton’ series ended up on Netflix

Author Julia Quinn was having coffee in her local shop when she found out that her Bridgerton series was a favorite of Shonda Rhimes.

Julia Dataframe Mean

“It was really out of nowhere,” Quinn explained. “I would talk to people later, and they’d ask, ‘How did you sell your books to Hollywood?’ I would say, ‘I didn’t.’ They just came to me. Nobody in Hollywood was adapting books like this. So it didn’t even occur to me to try to sell them.”

RELATED: ‘Bridgerton’ Series Author, Julia Quinn, Often Teases Friends About Meeting Regé-Jean Page

When it came to adapting the novels for Netflix, Quinn gave the producers complete creative freedom.

“I was not going to tell Shonda Rhimes how to make television,” she added in the interview with OprahMag.com.

The Julia Quinn ‘Bridgerton’ books are an 8-part series

When it comes to Quinn choosing a favorite character from her Bridgerton book series, there are so many choices. The 8-part series devotes each novel to one sibling. Of course, the first of those characters is Daphne Bridgerton (Phoebe Dynevor) from the book, The Duke and I.

Like the Bridgerton series on Netflix, the book chronicles the story of Daphne’s secret with Simon Basset, the Duke of Hastings. Fan-favorite Regé-Jean Page portrays the Duke; however, he will not return for season 2.

Instead,Bridgerton Season 2 will focus on Daphne’s older brother, Anthony (Jonathan Bailey), and his quest to find a wife. The other Bridgerton siblings will also return, including Benedict (Luke Thompson), Colin (Luke Newton), Eloise (Claudia Jesse), Francesca (Ruby Stokes), Gregory (Wil Tilston), and Hyacinth (Florence Hunt). Of course, Penelope Featherington (Nicola Coughlan) will return to report all of the gossip and scandals with her letters from Lady Whistledown.

Julia Quinn’s favorite character may come as a surprise

While Quinn loves all of her characters, unlike fans, the Duke is not her favorite.

Julia Vs R

“There are different things I love about each of them,” Quinn explained during the same interview. “With every book that I write, there’s something about it that is really special to me, both in terms of the finished product, but also in terms of the experience of writing it. I have memories wrapped up in each book that wouldn’t necessarily be apparent to the readers.”

RELATED: When Will Bridgerton Return for Season 2? Here’s the Latest Update

Who is Quinn’s favorite Bridgerton character?

“I adore Lady Danbury [played by Adjoa Andoh],” the author admitted. “Who wouldn’t? She actually first appeared before the Bridgertons in How to Marry a Marquis. Since then, if I can work her into a book, I do because I want to be her.”