0xhiroki

Verifying my Blockstack ID is secured with the address 15X7pH3z1J5aTHzeDwZrwiGsMgW8DUzcky https://explorer.blockstack.org/address/15X7pH3z1J5aTHzeDwZrwiGsMgW8DUzcky

0xhiroki

Keybase proof

I hereby claim:

• I am 0xhiroki on github.
• I am hiroki (https://keybase.io/hiroki) on keybase.
• I have a public key ASA0YUqWPQVW6egHZQt1OLYmzS4I-AGuT921pa94i_YqlQo

To claim this, I am signing this object:

0xhiroki

import os

import matplotlib.pyplot as plt
import numpy as np
import pandas as pd
import talib as ta
from matplotlib.dates import date2num
from matplotlib.finance import candlestick_ohlc

from catalyst import run_algorithm

0xhiroki

template <typename T = int> class Calc
{
  public:
    T multiply(T x, T y);
    T add(T x, T y);
};

template <typename T> T Calc<T>::multiply(T x, T y)
{

0xhiroki

Invert a binary tree. (https://leetcode.com/problems/invert-binary-tree/)

Google: 90% of our engineers use the software you wrote (Homebrew), but you can’t invert a binary tree on a whiteboard so fuck off.

TreeNode* invertTree(TreeNode* root) {
    if (root == NULL) {
        return NULL;
 }

0xhiroki

Given a binary search tree and a "target" value, search the tree to see if it contains the target. The basic pattern of the lookup() code occurs in many recursive tree algorithms: deal with the base case where the tree is empty, deal with the current node, and then use recursion to deal with the subtrees. If the tree is a binary search tree, there is often some sort of less-than test on the node to decide if the recursion should go left or right.

static int lookup(struct Node* node, int target) {
  if (node == NULL) {
    // 1. Base case where tree is empty.
    return false;
  } else {
    // 2. see if found here.
 if (target == node->data) {

0xhiroki

Singly-Linked Lists:
A set of nodes each containing some data and a link to the next node. Last node points to null.

ListNode *head = nullptr

struct ListNode {
  int data;

0xhiroki

Simpler one:
$ symbolicatecrash <path to your crash file> <path to your .dSYM>

Or more specifically:
$ export DEVELOPER_DIR=`xcode-select --print-path`
$ /Applications/Xcode.app/Contents/SharedFrameworks/DTDeviceKitBase.framework/Versions/A/Resources/symbolicatecrash <path to your crash file> <path to your .dSYM> >> <path to your output file>

This still sometimes doesn't symbolicate some logs. (i.e. appname 0x00110093 0x101000 + 61587)
If that happens, try the following.