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@frankandrobot
frankandrobot / ScalaAsyncMapPlayground
Created March 26, 2015 04:17
Playground showing complex async transforms
import scala.concurrent.ExecutionContext.Implicits.global
import scala.concurrent.Future
case class Tag(name:String = "0")
object HelloWorld {
def fetchAllTags:Future[List[Tag]] = Future{ List(Tag("a"), Tag("b"), Tag("c")) }
@frankandrobot
frankandrobot / bacon.combineTemplate.js
Last active November 7, 2015 18:11
BaconJS combineTemplate vs HighlandJS zip vs Bluebird join vs BaconJS zip vs Kefir zip
const restify = require('restify');
const server = restify.createServer();
const Bacon = require('baconjs');
server.get('/', function(req, res, next) {
const a = Bacon.once('a');
const b = Bacon.once('b');
@frankandrobot
frankandrobot / CursorProxyDelete.java
Created August 9, 2013 22:53
Proxy for the Android Cursor class that ignores the row passed in the constructor. Use this to "delete" rows in the listview before deleting them for real in the database.
package com.frankandrobot.reminderer.database.databasefacade;
import android.annotation.TargetApi;
import android.content.ContentResolver;
import android.database.AbstractCursor;
import android.database.CharArrayBuffer;
import android.database.ContentObserver;
import android.database.Cursor;
import android.database.DataSetObserver;
import android.net.Uri;
@frankandrobot
frankandrobot / Task.java
Created August 10, 2013 18:50
Gist for Android Studio bug
package com.frankandrobot.reminderer.datastructures;
import android.content.ContentValues;
import android.database.Cursor;
import android.os.Parcel;
import android.os.Parcelable;
import com.frankandrobot.reminderer.database.TaskTable.TaskCol;
import com.frankandrobot.reminderer.parser.GrammarRule.RepeatsToken;
import com.frankandrobot.reminderer.datastructures.DataStructure.*;
@frankandrobot
frankandrobot / Datastructure.java
Created August 10, 2013 18:50
Gist for Android Studio bug
package com.frankandrobot.reminderer.datastructures;
import java.util.HashMap;
import java.util.Map;
import java.util.Calendar;
/**
* A datastructure with auto-generated getters and setters.
*
* It is possible to write functions that take variable __names__ as arguments
static private class TaskUnionRepeatQuery implements TaskQuery
{
@Override
public Cursor query(SQLiteOpenHelper openHelper,
Uri url,
String[] projectionIn,
String selection,
String[] selectionArgs,
String sort)
{
@frankandrobot
frankandrobot / .gitignore
Last active July 20, 2016 03:43
Recursive Flatten vs Tail-Recursive Flatten
.gradle/
.idea/
build/
*.iml
gradle/
@frankandrobot
frankandrobot / is_visible.py
Created July 25, 2018 02:22
simple brain teaser
def is_visible(object_value, current_visibility, desired_visibility):
specified = object_value['visibility']
if current_visibility == 'hide':
if desired_visibility == 'show':
return specified == desired_visibility
else:
return True
# current_visibility is "show"...
#' Calculate the real return on an index fund over a single year.
#'
#' @param yield - percent as a decimal
#' @param expense_ratio - percent as a decimal
#' @param balance
#'
#' @return
#' @examples
real_return <- function(yield, expense_ratio, balance) {
# if there was no expense ratio, this would be your new balance
#' Calculate the real return on an index fund.
#'
#' @param yield - percent as a decimal
#' @param expense_ratio - percent as a decimal
#' @param balance
#' @param n - number of years
#'
#' @return
#' @examples
real_return_n <- function(yield, expense_ratio, starting_balance, n) {