Zhentiw - 博客园

2020年8月19日

摘要： To compute this formula, you need to do: Actually, to make it simpler, we can do Vectorization, that formula is actually equals to: So we can code it 阅读全文

posted @ 2020-08-19 19:10 Zhentiw 阅读(94) 评论(0) 推荐(0)

[CSS] Use CSS Grid to create an asymmetric promo grid

摘要： In this lesson, we'll create an asymmetric promotional area where our promos get progressively smaller. We'll use CSS Grid to keep our HTML to 6 seman 阅读全文

posted @ 2020-08-19 03:08 Zhentiw 阅读(198) 评论(0) 推荐(0)

[Machine Learning] Octave Control Statements, for while if

摘要： For: v = zeros(10, 1); for i=1:10, v(i) = 2^i; end; # the same as indices=1:10 for i=indices, disp(i) end; while & if & break: i=1; while i <=5, v(i) 阅读全文

posted @ 2020-08-19 02:49 Zhentiw 阅读(128) 评论(0) 推荐(0)

[Machine Learning] Octave Plotting Data

摘要： t=[0:0.01:0.98]; y1 = sin(2*pi*4*t); plot(t, y1) If you draw tha cos function, it will replace the sin function figure to a new one y2 = cos(2*pi*4*t) 阅读全文

posted @ 2020-08-19 02:27 Zhentiw 阅读(172) 评论(0) 推荐(0)

2020年8月18日

[VSCode] Visually Organize Applications in VS Code with Window Color-Coding

摘要： When working in a codebase that has frontend, backend, middleware, service, and other concerns all in the same GIT repository, it can be helpful to co 阅读全文

posted @ 2020-08-18 02:10 Zhentiw 阅读(139) 评论(0) 推荐(0)

[VSCode] Create a sharable code snippet image with Polacode extension

摘要： Search for "Polacode" in extensions and install it: After installer, open "Command palette" Type "polocode". Use mouse to select code you want to crea 阅读全文

posted @ 2020-08-18 02:01 Zhentiw 阅读(153) 评论(0) 推荐(0)

[Javascript] Build lodash.omitBy and lodash.pickBy with Object.fromEntries + Object.entry (isomorphism)

摘要： _.omitBy and its sibling _.pickBy are popular utilities which apply filter-like functionality to objects. Both of them accept a function to determine 阅读全文

posted @ 2020-08-18 01:54 Zhentiw 阅读(278) 评论(0) 推荐(0)

2020年8月17日

[Machine Learning] Octave Computing on Data

摘要： Mutiplate materix: Everytime you see '.' mean element wise operator. >> A = [1 2; 3 4; 5 6]; >> B = [11 12; 13 14; 15 16]; >> C = [1 1; 2 2]; >> A*C a 阅读全文

posted @ 2020-08-17 22:04 Zhentiw 阅读(133) 评论(0) 推荐(0)

[Machine Learning] Octave Moving data around

摘要： Load data: load featuresX.dat who: Check how many variables in your current session: who whos: details about variables: whos Clear one variable: clear 阅读全文

posted @ 2020-08-17 21:36 Zhentiw 阅读(107) 评论(0) 推荐(0)

[Machine Learning] Octave Basic Operations

摘要： You can do baisc math: 5+6 32-8 1/2 2^3 1 == 2 % ans = 0 means false 1 ~=1 % 1 not equals to 2. ans = 1 means true 1 && 0 1 || 0 xor(1, 0) Change the 阅读全文

posted @ 2020-08-17 20:39 Zhentiw 阅读(110) 评论(0) 推荐(0)

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