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| 16:57:52
| <juliangruber> | substack: can you help me with this one? https://gist.github.com/juliangruber/5303065 |
| 16:58:03
| <juliangruber> | module-deps piped to through doesn't work |
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| <rowbit> | /!\ ATTENTION: (default-local) paid account successfully upgraded /!\ |
| 17:39:19
| <rowbit> | /!\ ATTENTION: (default-local) [email protected] successfully signed up for developer browserling plan ($20). Cash money! /!\ |
| 17:39:52
| <pkrumins> | \o |
| 17:39:59
| <pkrumins> | |\ |
| 17:40:03
| <pkrumins> | / \ |
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| <substack> | juliangruber: what if you through(function (buf) { console.log(buf) }) ? |
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| 18:03:53
| <juliangruber> | ah I know |
| 18:04:06
| <juliangruber> | substack: It's because errors are emitted |
| 18:04:16
| <juliangruber> | wich is wanted, as not all files are present |
| 18:04:27
| <juliangruber> | but that fucks up the internal state of module-deps |
| 18:07:08
| <juliangruber> | how can I make module-deps skip files that should be in node_modules? |
| 18:08:40
| <juliangruber> | fixed it, will make a pr |
| 18:11:13
| <chrisdickinson> | btw the sha1 built into browserify is broken |
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| 18:11:24
| <chrisdickinson> | ): |
| 18:11:34
| <chrisdickinson> | http://npm.im/sha1 works though |
| 18:11:38
| <substack> | chrisdickinson: https://github.com/dominictarr/crypto-browserify |
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| 18:14:51
| <chrisdickinson> | https://github.com/dominictarr/crypto-browserify/issues/9 |
| 18:15:04
| <chrisdickinson> | substack: at some point i'd like to try out your buffer-browserify changes on my git stuff |
| 18:15:37
| <chrisdickinson> | thus far i've found that the biggest (well, second biggest after the incredibly awful way I'm doing inflating) perf problem is the number of times I'm calling `SlowBuffer.copy` |
| 18:16:03
| <chrisdickinson> | also there are assumptions about how buffers work -- being able to reach into buffer.parent and slice to get the child buffer as an array, etc |
| 18:25:10
| <defunctzombie> | chrisdickinson: I wouldn't rely on any cryto-browserify stuff |
| 18:25:19
| <defunctzombie> | check out the crypto lib from google |
| 18:25:29
| <defunctzombie> | and pick the parts you want from that |
| 18:27:55
| <defunctzombie> | crypto-js iirc |
| 18:37:47
| <chrisdickinson> | defunctzombie: yeah. i mostly only need sha1 |
| 18:37:56
| <chrisdickinson> | well, s/mostly //g |
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| 18:38:09
| <mikolalysenko> | now that typed arrays are part of node, maybe it is better to try using those instead of buffers where possible... |
| 18:39:02
| <defunctzombie> | chrisdickinson: https://github.com/bitfloor/bitcoinjs-lib/tree/master/src/crypto-js but I think that is only sha256 |
| 18:39:23
| <chrisdickinson> | mikolalysenko: that presents difficulties ): |
| 18:40:19
| <substack> | juliangruber: not sure what https://github.com/substack/module-deps/pull/6 is for |
| 18:40:40
| <mikolalysenko> | chrisdickinson: I know, for things like character data and working with the default streams, etc. |
| 18:40:52
| <chrisdickinson> | yeah, mostly the default streams bit ): |
| 18:40:54
| <juliangruber> | substack: I want to find all files required by a file without having to do npm install |
| 18:41:03
| <mikolalysenko> | but it seems to me that if you just have binary data, might as well stick it in a typed array and try to avoid buffers at all cost |
| 18:41:13
| <juliangruber> | substack: so I want to skip those |
| 18:41:19
| <chrisdickinson> | the other problem is that typed arrays are incredibly slow to instantiate |
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| 18:41:27
| <chrisdickinson> | also, being able to concatenate them |
| 18:41:52
| <chrisdickinson> | and reading different sizes of numbers out of them |
| 18:42:07
| <mikolalysenko> | instantiation is bad, but not insurmountable |
| 18:42:11
| <chrisdickinson> | plus, if you create too many, or too big, browsers tend to handle it poorly |
| 18:42:17
| <mikolalysenko> | and you can get around the size issue using views |
| 18:42:21
| <chrisdickinson> | i.e. crash |
| 18:42:42
| <mikolalysenko> | yeah... I've noticed that in chome sometimes, not sure exactly what is going on |
| 18:42:47
| <chrisdickinson> | i'll probably be looking into it once i've got the other bits working |
| 18:42:50
| <mikolalysenko> | though it has gotten better recently |
| 18:43:01
| <mikolalysenko> | I haven't seen a typed array kill chrome in months |
| 18:43:12
| <mikolalysenko> | but it used to be that all the damn time I was getting segfaults |
| 18:43:30
| <chrisdickinson> | yeah, i've gotten sadtab'd a lot from trying typed arrays in this git stuff |
| 18:43:51
| <mikolalysenko> | what I tend to do with typed arrays to avoid the instantiation thing is cache them in my modules... |
| 18:44:08
| <mikolalysenko> | though this can obviously create problems with memory leaks, I think the performance benefits outweigh the risks |
| 18:44:36
| <mikolalysenko> | as long as you never share references to the typed array, this behavior is acceptable |
| 18:44:52
| <chrisdickinson> | i was using weakmap to cache 'em |
| 18:44:56
| <mikolalysenko> | I've thought about building a generic typed array cache, but it would be so easy to abuse/misuse that I've not done it |
| 18:45:02
| <chrisdickinson> | which is actually really fast / neat |
| 18:45:10
| <mikolalysenko> | interesting |
| 18:45:22
| <chrisdickinson> | but it still crashed, because of the number / size of typed array allocation |
| 18:45:29
| <mikolalysenko> | that is weird |
| 18:45:36
| <chrisdickinson> | of course, this is at least partially due to the incredibly stupid way i have to do zlib inflate stuff |
| 18:45:58
| <mikolalysenko> | yeah |
| 18:46:15
| <chrisdickinson> | hilariously, it's pretty zippy in chrome, but slow in firefox |
| 18:46:33
| <chrisdickinson> | which is surprising since i've been getting consistently fast results for most things in FF lately |
| 18:46:45
| <mikolalysenko> | I wonder why... |
| 18:47:01
| <mikolalysenko> | it feels a bit like the v8 team has been slacking off, or wasting too much time on dart |
| 18:47:26
| <chrisdickinson> | yeah |
| 18:47:33
| <mikolalysenko> | performance has basically flatlined over the last year |
| 18:47:57
| <mikolalysenko> | and anyone with half a brain knows that dart is completely doomed |
| 18:48:58
| <mikolalysenko> | one thing I am bit hopeful about is asm.js, even if the current incarnation is a bit flawed |
| 18:50:25
| <mikolalysenko> | anyway, going back to typed arrays: one way to mitigate some of the costs is to just allocate a single big typed array and do calculations by indexing into it |
| 18:50:53
| <mikolalysenko> | so you have to wrap up pointers into the array yourself, but the advantage is you don't have to construct so many arrays |
| 18:51:14
| <mikolalysenko> | this is basically how ndarray works, and it also supports some other features like striding and higher dimensional slicing |
| 18:51:28
| <mikolalysenko> | https://github.com/mikolalysenko/ndarray |
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| <defunctzombie> | man. I am loving this procfile based launcher |
| 19:06:35
| <defunctzombie> | I can start al my processes at once |
| 19:06:40
| <defunctzombie> | and restart any of them |
| 19:06:42
| <defunctzombie> | this is great |
| 19:06:52
| <defunctzombie> | so much better than what I had before |
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| <niftylettuce> | last call before i list it on eBay, anyone want Macbook Air 13"? |
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| <marcello3d> | what do people use for long/async stack traces? |
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| <jesusabdullah> | isaacs: is there a way to get node-tap to show useful information on errors when I want to do something like, t.ok(!err, 'no error'); ? Cause right now the stack trace is for the assert error but I want the stack trace for my 'err' |
| 19:32:22
| <jesusabdullah> | isaacs: advice appreciated |
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| <marcello3d> | longjohn, trycatch, long-stack-traces ? |
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| 19:36:45
| <jesusabdullah> | marcello3d: isaacs: specifically, I'm using https://github.com/visionmedia/supertest to do some testing, if the .end has an error, *that's* the assertion |
| 19:37:34
| <marcello3d> | I think there's a t.ifError(err) thing |
| 19:37:40
| <marcello3d> | or similar |
| 19:39:40
| <jesusabdullah> | oh word, t.error does what I want |
| 19:40:24
| <jesusabdullah> | bangin' |
| 19:42:30
| <isaacs> | jesusabdullah: i usually just do `if (err) throw err` |
| 19:42:39
| <jesusabdullah> | hmmm |
| 19:42:44
| <jesusabdullah> | I GUESS THAT WOULD WORK |
| 19:42:44
| <LOUDBOT> | LETS HAVE SOME FUN THIS BEAT IS SICK, I WANNA CHECK THE LOGS ON YOUR CISCO PIX |
| 19:42:48
| <isaacs> | jesusabdullah: because thta'll just abort the test and print the error. |
| 19:43:09
| <jesusabdullah> | WELL TOO LATE FOR YOU ISAACS IM USING t.error !! |
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| <rowbit> | SubStack, pkrumins: At least 5 people waiting in the queue for free servers! (Waiting: 25) |
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| <juliangruber> | new module: https://github.com/juliangruber/code-to-test-ratio |
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| <jesusabdullah> | I should rewrite node-pedant |
| 21:00:34
| <jesusabdullah> | ahaha, this s/the cloud/my butt/ chrome plugin is awesome |
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| 22:18:39
| <Raynos> | dominictarr: idea! ( https://gist.github.com/Raynos/5279565 0 |
| 22:19:04
| <Raynos> | the interesting parts are https://gist.github.com/Raynos/5279565#file-callbacks-js-L189 and https://gist.github.com/Raynos/5279565#comment-810477 |
| 22:19:18
| <Raynos> | i would like if we could make stream interop with pull streams equally trivial by design |
| 22:21:13
| <dominictarr> | what is future? |
| 22:26:13
| <jlord> | what IS future? |
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| <dominictarr> | Raynos: +1 |
| 22:47:19
| <Raynos> | oh future is like a callback. Except its a function that takes zero arguments and a callback |
| 22:47:30
| <dominictarr> | I figured it out eventually |
| 22:47:44
| <Raynos> | yeah that gist is a really bad explanation of the idea |
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| 22:47:56
| <dominictarr> | no, it's pretty good |
| 22:47:56
| <Raynos> | the only thing worth pointing out that it happens to be trivial to have backcompat with node callbacks |
| 22:48:07
| <Raynos> | thats the most important thing! |
| 22:48:07
| <dominictarr> | yes, absolutely |
| 22:48:18
| <dominictarr> | I posted a comment |
| 22:48:38
| <dominictarr> | the point I got confused at was duplex callback |
| 22:49:05
| <dominictarr> | also… pipe(map(…)).pipe(map(…)) could be dried up |
| 22:49:26
| <dominictarr> | maybe step away from stream syntax |
| 22:51:43
| <dominictarr> | this is what people should be directed to when they want to learn about control flow |
| 22:51:55
| <dominictarr> | … trick them into learning higher order functions … |
| 22:55:31
| <Raynos> | ;D |
| 22:55:38
| <Raynos> | well pipe allows for chaining |
| 22:55:44
| <Raynos> | I guess we can just use compose for that |
| 22:56:53
| <Raynos> | dominictarr: I may take the name paaf on github for this :P |
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| 23:09:26
| <Raynos> | dominictarr: If we were to implement some kind of similar duplex style function for (req, res) would we reinvent middleware? |
| 23:09:42
| <Raynos> | I want a good name for these "duplex style" functions |
| 23:10:01
| <substack> | Raynos: https://github.com/substack/http-duplex |
| 23:10:05
| <substack> | also: https://github.com/substack/response-stream |
| 23:10:53
| <Raynos> | I'm thinking of https://gist.github.com/Raynos/5279565#file-callbacks-js-L44 |
| 23:10:57
| <substack> | it's not the same as middleware in an important way since the user is plumbing up how to pipe everything together on each request |
| 23:11:10
| <substack> | it's not static like the connect middleware stack |
| 23:11:27
| <dominictarr> | do you mean a partially applied middleware style? |
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| 23:17:46
| <wolfeidau> | dominictarr: I had a simple question, had you guys tried adding any telemetry to your "streamy" modules? |
| 23:18:24
| <dominictarr> | telemetry? |
| 23:19:13
| <wolfeidau> | dominictarr: Counters, Guages that sort of thing |
| 23:20:18
| <wolfeidau> | dominictarr: I spent a lot of time adding console.log while pulling apart your stuff when mainly because i was unsure of what was getting invoked and when |
| 23:21:02
| <wolfeidau> | dominictarr: How can you have pipes and stuff without gauges :) |
| 23:21:05
| <dominictarr> | I wrote this once https://github.com/dominictarr/probe-stream |
| 23:21:52
| <wolfeidau> | dominictarr: It was only an observation btw, just thinking out loud, how can you have a system of pipes and connectors without a view of what is going in and out of them |
| 23:22:33
| <wolfeidau> | dominictarr: Just something you may want to consider :) |
| 23:23:04
| <chrisdickinson> | wolfeidau: every stream is also an event emitter -- it's easy to tap into the data |
| 23:23:23
| <chrisdickinson> | x.pipe(y).on('data', console.log).pipe(z).on('data', console.log) |
| 23:23:27
| <dominictarr> | hmm, so you are thinking of a well defined api for grabbing stats, or debugging? |
| 23:29:52
| <dominictarr> | wolfeidau: I've mostly just used console.log, etc too, but I take that out before I publish :) (usually) |
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