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# List of string to a long string. 
alist = ['1', '2', '3', '4']
alist_joint = ' '.join(alist)

# Long string to list 
astring = '1 2 3 4'
alist = astring.split(sep=' ')

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# Try Gammatonefilter

t = np.linspace(0, 1, 1000)  # Time
f = 4  # center freq
theta = 0  # phase
b = 1  # filter bandwidth 
n = 3  # filter order
a = 1. # Amp
g = a * np.power(t, (n-1)) * np.exp(-2 * np.pi * b * t) * np.cos(2 * np.pi * f * t + theta)

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youtube-dl --extract-audio --audio-format wav --audio-quality 0 --postprocessor-args "-ss 00:00:00.00 -t 00:05:00.00" https://www.youtube.com/watch?v=n

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TextEditor diagnosticsBox;


void logMessage(const String& m){
    diagnosticsBox.moveCaretToEnd();
    diagnosticsBox.insertTextAtCaret(m + newLine);
}

// resized()
diagnosticsBox.setBounds;

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a = np.arange(10)  # (10, )

a.reshape(-1, 1)   # (10, 1)

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import 'package:flutter/material.dart';

void main() => runApp(MaterialApp(
  home: MyApp(),
  ));

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => new _MyAppState();
}

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## Session Management

Sessions are useful for completely separating work environments. I have a ‘Work’ session and a ‘Play’ session; in ‘Work’, I keep everything open that I need during my day-to-day development, while in ‘Play’, I keep open current open-source gems or other work I hack on at home.

	tmux new -s session_name
creates a new tmux session named session_name
	tmux attach -t session_name
attaches to an existing tmux session named session_name
	tmux switch -t session_name
switches to an existing session named session_name

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n_columns_ndarray = long_audio_vector.reshape((-1, num_of_channels))

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import os

file_names = os.listdir("file_path")

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for (std::vector<int>::const_iterator i = vecName.begin(); i != vecName.end(); ++i)
  std::cout << *i << std::endl;