Daniel Fry @danfrydev

VP Lead Software Engineer @jpmorgan @chase_uk danfry.dev London Joined February 2022

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Daniel Fry @danfrydev

a week ago

@tavus Impressive work, but I can't get past the worry that technology like this makes life a lot easier for scammers and bad actors. What are the use cases you're most excited about?

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Daniel Fry @danfrydev

2 weeks ago

@mattpocockuk Ah nice! one catch on D though is that `number` lets whitespace through ("01 1" passes). with bigint it doesn't typescriptlang.org/play/?#code/C4…

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Daniel Fry @danfrydev

2 weeks ago

turns out TypeScript types can enforce an exact string length

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@techsavvytravvy the key is `"" & String` vs `"" & {}`. TS folds `"" & {}` away, so the last D swallows the rest. `"" & String` stays a real placeholder and pins the end, so "12345678" fails and "1234" works (no leading zero needed) side by side: typescriptlang.org/play/?#code/C4…

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Daniel Fry @danfrydev

2 weeks ago

@JitPackJoyride thanks for sharing Ajit, this looks great!🦾

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Daniel Fry @danfrydev

2 weeks ago

another use: Ethereum addresses vs hashes (the case @MicahZoltu asked for in TypeScript issue #52243). Address = exactly 40 hex chars, Hash = exactly 64, so mixing them up is a compile error. no brands, no runtime code. playground: typescriptlang.org/play/?#code/C4…

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Daniel Fry @danfrydev

2 weeks ago

try it in the playground: typescriptlang.org/play/?#code/C4…

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Daniel Fry @danfrydev

2 weeks ago

x.com/techsavvytravv… builds on @techsavvytravvy's non-empty string trick. his gives you a minimum length, the `"" & String` end marker gives you an exact one.

trav @techsavvytravvy

3 months ago

i found a way to represent a non-empty string without branded types and without using `any`

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Daniel Fry @danfrydev

3 months ago

@DeepakNesss This is a terrible take

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Daniel Fry @danfrydev

3 months ago

@cancelik Been waiting for this!

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Daniel Fry @danfrydev

3 months ago

@DavidOndrej1 It’s just become available for me now

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Daniel Fry @danfrydev

4 months ago

@opencode Have also really been enjoying using the North Mini Code model from @cohere

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Daniel Fry @danfrydev

4 months ago

love this effect in @opencode

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Daniel Fry @danfrydev

4 months ago

@jlongster nice. i've moved my architecture diagrams over to plain HTML - lets me layer in some richer stuff like animated request flow through the call chain, hover to trace a path, click a node for a side-panel with the detail.