kcochibili

Intro to the Command Line

Does command line interface (CLI), REPL, terminal, console, or shell sound scary? Don't worry, we'll learn about the basic computer interface that gives you super powers! If you want to work with Raspberry Pi, Linux, or many programming languages you need a basic familiarity with the CLI. This MILL-Mini will demystify the terminal so you can use it to get things done.

What is the Shell?

The command line is a text-based interface for efficiently getting stuff done. It's often called the shell, terminal, console, cmd, or Bash, but ultimately the Shell is just a program on your computer like any other application. Its job is to act as a command shell, taking input from the user, ordering the computer's operating system (OS) to execute the instructions, and returning the outputs.

mptap

public class SetLikeDS {
	private List<Integer> list;	
	private Map<Integer, Integer> map;
	
	public SetLikeDS() {
		list = new ArrayList<>();
		map = new HashMap<>();
	}
	
	public void insert(int num) {

mptap

import javafx.util.Pair; //available in Java 1.8

public class Solution {
  
  public static boolean twoSum(int[] a, int target) {
    Map<Integer, Pair> map = new HashMap<>();
    for(int i=0; i<a.length; i++) { //O(n) where n=a.length
      if (!map.containsKey(a[i])) { //don't insert duplicates
        map.put(a[i], new Pair<Integer, Integer>(target-a[i], i)); 
        //key is every unique element, value is a pair of numberToFind and position of element first found

evanwill

How to add more to Git Bash on Windows

Git for Windows comes bundled with the "Git Bash" terminal which is incredibly handy for unix-like commands on a windows machine. It is missing a few standard linux utilities, but it is easy to add ones that have a windows binary available.

The basic idea is that C:\Program Files\Git\mingw64\ is your / directory according to Git Bash (note: depending on how you installed it, the directory might be different. from the start menu, right click on the Git Bash icon and open file location. It might be something like C:\Users\name\AppData\Local\Programs\Git, the mingw64 in this directory is your root. Find it by using pwd -W). If you go to that directory, you will find the typical linux root folder structure (bin, etc, lib and so on).

If you are missing a utility, such as wget, track down a binary for windows and copy the files to the corresponding directories. Sometimes the windows binary have funny prefixes, so

Moximillian

// Free to copy, use and modify for all types of software projects

import UIKit

// ************** Protocol ***************
/// Closurable protocol
protocol Closurable: class {}
// restrict protocol to only classes => can refer to the class instance in the protocol extension
extension Closurable {

dominicthomas

    private void playVideo(final File file) {
        Uri intentUri = Uri.fromFile(file);
        file.setReadable(true, false); // security?
        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_VIEW);
        intent.setDataAndType(intentUri, "video/*");
        startActivity(intent);
    }

cbeyls

package be.digitalia.common.widgets;

import android.content.Context;
import android.os.SystemClock;
import android.util.AttributeSet;
import android.view.View;
import android.widget.ProgressBar;

/**
 * ContentLoadingProgressBar implements a ProgressBar that waits a minimum time to be

dominicthomas

public class JSONUtils {

    /**
     * Open a json file from raw and construct as class using Gson.
     *
     * @param resources
     * @param resId
     * @param classType
     * @param <T>
     * @return

dominicthomas

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.MotionEvent;
import android.view.View;

asifmujteba

@TargetApi(Build.VERSION_CODES.KITKAT)
    public static String getPath(final Context context, final Uri uri) {

        final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;

        // DocumentProvider
        if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
            // ExternalStorageProvider
            if (isExternalStorageDocument(uri)) {
                final String docId = DocumentsContract.getDocumentId(uri);