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This is atom setting.

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Introduction

For Pycharm IDE, we want to use redirect input file while running the code.

How to Use

1. You can make a file for a input data as like *.in.
2. Typing auto_redirect_input_file.py in top of code.
3. Click the "Edit Configuration".
4. Put the file name *.in in "Script parameters".

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Introduction

There are many math symbols for creating a math formula.

Usually using math symbol

＋ ± － × ‧÷ ± ＝ ≠ ≒ ≡ ≦ ≧ ≌ ∞ ∝ Σ π ㎡ ％ ℃ ℉ √ ‱ ‰ № ℀ ℁ ℅ ℆ ⅍

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Introduction

How to use the NSTimer in Swift.

Note

1. parameter repeats: true -> repeat, false -> no repeat.
2. We don't have to call 'timer.fire()' before NSTimer of the method of scheduledTimerWithTimeInterval. Those will fire automatically.

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Introduction

We use itertools.product lib to run a map instead of double for loop.

Detail

This functions is actually creating a Cartesian product.

Talk is cheap. Show me the code.

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Introduction

Limit the number of lines in Textarea.

Html

<textarea data-limit-rows="true" cols="60" rows="4"></textarea>

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Intrduction

When we click enter key, when can foucs to next item automatically.

Javascript

$('body').on('keydown', 'input, select, textarea', function (e)
{

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Intrduction

Get enum description from enum class, similar get variable name directly.

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Introduction

In Xmarin, we basically used c# language to develop an iOS application, we need to use hyperlink in textview.
But if we wanna change to Obj-c code, that's the same grammar.

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Introduction

Here are three ways to code a timer in Android.
There are three ways to achieve a timer.

1. Timer
2. Handler
3. Countdown Timer