Tracking Your Progress • rgrind

This guide assumes you’ve already solved at least one challenge, if you haven’t yet, start with Getting Started with rgrind first.

Every time you attempt a challenge, rgrind quietly records it, locally, on your own machine, in a small file it manages for you. Nothing is ever sent anywhere. This local history is what powers streaks, stats, and the activity heatmap.

Solving something to track

library(rgrind)

run_challenge("sum_evens", function(x) sum(x[x %% 2 == 0], na.rm = TRUE))
#> 
#> ── Sum of Even Numbers ─────────────────────────────────────────────────────────
#> Base R Optimisation • Easy
#> 
#> ────────────────────────────────────────────────────────────────────────────────
#> ✔ All 7 tests passed!
#> 🔥 Current streak: 1 day
#> 
#> ── Explanation
#> Idiomatic solution: sum(x[x %% 2 == 0], na.rm = TRUE) This avoids a for-loop
#> entirely by using R's vectorised modulo operator to build a logical mask, then
#> subsetting. This is roughly 50-100x faster than a for-loop for large vectors
#> because R's C-level vectorised operations avoid per-element interpreter
#> overhead.
#>

Notice the line with a flame, that’s your current streak: the number of consecutive days (including today) on which you’ve solved at least one challenge.

Understanding streaks

A streak counts calendar days with at least one passing solve, not individual solves. Solving five challenges today still only counts as one streak day. Solving nothing today doesn’t break your streak immediately either, your streak stays alive until the day after the one you last solved something, giving you until the end of today to keep it going.

Checking your overall stats

rg_stats()
#> 
#> ── Your rgrind Stats ───────────────────────────────────────────────────────────
#> ℹ Challenges solved: 1/10
#> ℹ Total attempts: 1
#> ℹ 🔥 Current streak: 1 day
#> ℹ 🏆 Longest streak: 1 day

This shows:

Challenges solved : how many distinct challenges you’ve fully passed at least once (out of the total available)
Total attempts : every submission you’ve made, passing or not
Current streak : your active consecutive-day count
Longest streak : the best run you’ve ever had, even if it’s since ended

Viewing your activity heatmap

rg_heatmap()
#> 
#> ── Last 28 Days
#> · · · · · · ·
#> · · · · · · ·
#> · · · · · · ·
#> · · · · · · ▪
#> 
#> · none ▪ 1 ▓ 2-3 █ 4+

This shows the last 28 days as a simple grid, one row per week. Each symbol represents how many challenges you passed that day:

· : no solves that day
▪ : 1 solve
▓ : 2-3 solves
█ : 4 or more solves

It’s a quick visual way to see your consistency over time — the kind of thing that’s satisfying to watch fill in as you build a habit.

Viewing your raw history

If you want the full underlying data, every single attempt, with timestamps, you can access it directly:

rg_get_history()
#>   challenge_id           timestamp passed
#> 1    sum_evens 2026-09-24 23:26:33   TRUE

This can be useful if you want to analyse your own progress further (for example, seeing which challenges took you multiple attempts).

Starting fresh

If you ever want to wipe your local history completely, for example, if you’re demonstrating the package to someone else, or just want a clean slate, you can reset it:

rg_reset_history()

This cannot be undone, so use it deliberately.

What’s next

That’s the full loop: solve challenges, build a streak, watch your heatmap fill in. Run list_challenges() any time to see what’s left to try, and come back daily to keep your streak alive.