Upstream And Downstream In Maths Questions
What is upstream and downstream in maths?
Join Stack Overflow to learn, share knowledge, and build Upstream And Downstream In Maths Questions Upstream And Downstream In Maths Questions your career. Connect and share knowledge within a single location that is structured and easy to search. I've started playing with Git and have come across the terms "upstream" and "downstream". I've seen these before but never understood them fully. In terms of source control, you're " downstream " when you copy clone, checkout, etc from a repository.
Information flowed "downstream" to you. When you make changes, you usually want to send them back " upstream " so they make it into that repository so that everyone pulling from Upstream And Downstream In Maths Questions the same source is working with all the same changes. This is mostly a social issue of Upstream And Downstream In Maths Questions how everyone can coordinate their work rather than a technical requirement of source control.
You want to get Upstream And Downstream In Maths Questions your changes into the main project so you're not tracking divergent lines of development. Upstream and Upstream And Downstream In Maths Questions Upstream And Questions Downstream Maths In downstream in maths questions you'll read about package or release managers the people, not the tool talking Upstream And Downstream In Maths Questions about submitting changes to "upstream". That usually means they had to adjust the original sources so they could create a package for their.
They don't want to keep making those changes, so if they send them "upstream" to the original source, they shouldn't have to deal with the same issue in Upstream And Downstream In Maths Questions the next release.
When you read in git tag man page :. One important aspect of git is it is distributed, and being distributed largely means there is no inherent "upstream" or "downstream" in the. Those Upstream And Downstream In Maths Questions notions are always relative between two upstresm and depends on the way data flows:.
The DVCS Distributed Version Control System twist is: you have no idea what downstream actually is, beside your own repo relative Upstream And Downstream In Maths Questions to the remote repos you have declared. In term of " flow of data ", your repo is at Upstream And Downstream In Maths Questions the bottom "downstream" of a flow coming from upstream repos "pull from" and going back to the same or other upstream repos "push to". It means you are pulling from an "upstream" repo where a rebase took placeand you the "downstream" repo is stuck with the consequence lots of duplicate commits, because the Upstream And Downstream In Maths Questions Upstream And Downstream In Maths Questions branch rebased upstream recreated the commits of upstream and downstream in maths questions same branch you have Upstream And Downstream In Maths Questions Upstream And Downstream In Maths Questions locally.
That is bad because for one "upstream" repo, there can be many downstream repos i. Again, with Upstream And Downstream In Maths Questions the "flow of data" analogy, in a DVCS, one bad command "upstream" can have a " ripple effect " downstream. Note: this is not limited to data. It also applies to parametersas git commands like the "porcelain" ones often call internally other git commands the "plumbing" ones. See rev-parse man page :. Many git porcelainish commands take mixture of flags i.
This command is used to distinguish between. The term upstream also has some unambiguous meaning as comes to the suite of GIT tools, especially relative to tracking. It will print Upstream And Downstream In Maths Questions an error message otherwise:. Just issue :. For every branch that is up to date or successfully pushed, add upstream tracking downxtream, used by argument-less git-pull 1 and other commands.
For more upstream and downstream in maths questions, see branch. Defines, together with branch. It defaults to origin if no remote upstream and downstream in maths questions configured.
Generally speaking, upstream is where you cloned from the origin. Downstream is any project that integrates your work with other works. There is, alas, another use of "upstream" that the other answers here are not getting at, namely to refer to the parent-child relationship of commits within Upstream And Downstream In Maths Questions Upstream And Downstream In Speed Upstream And Downstream 50 Maths Questions a downstdeam. Scott Speed Upstream And Downstream Reviews Chacon in the Pro Git book is particularly prone to this, and the results are unfortunate. Do not imitate this way of speaking. He wants to say that commit B is the only child of the only child of Why this direction should be called "upstream" rather than "downstream", Questions Downstream Upstream In And Maths or why the geometry of such a pure straight-line graph should be described "directly upstream", is completely unclear and probably upstream and downstream in maths questions. The man page upstream and downstream in maths questions Upstream And Downstream In Maths Questions git-merge does a far better job of explaining this relationship when it says that "the current branch head is an ancestor of the named commit.
Indeed, Chacon himself appears to use "downstream" later to mean exactly the same thing, when donstream speaks of rewriting all child commits of a deleted commit:.
Pustream Upstream And Downstream In Maths Questions must rewrite all the commits downstream from 6df76 to fully remove this file from your Git history. Basically Upstream Downstream Maths In And Questions he seems not to have un clear idea what he means by "upstream" and "downstream" when referring Upstream Questions And Downstream In Maths to the history of commits over time. This use is informal, then, and not to be encouraged, as it is just confusing. It is perfectly clear that every commit except one has at least one parent, and that parents of parents are thus ancestors; and in the other direction, commits have children and Upstream And Downstream In Maths Questions descendants.
That's accepted terminology, and describes the directionality of the graph unambiguously, so that's the way to talk when you want to describe how commits relate to one another within the graph geometry of a repo. Do quewtions use "upstream" or "downstream" loosely in this situation. The man page does go mafhs to describe a situation where the use of "upstream" is legitimate: fast-forwarding often happens when "you Downstream Upstream Maths In Questions And are tracking an upstream repository, you have committed no local changes, and now you want to update to a newer upstream revision.
But in the man page there is a upstream and downstream in maths questions repository; there is no remote repository in Chacon's cited example of fast-forwarding, just a couple of locally created branches.
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Viewed Maths And In Questions Downstream Upstream k times. ThomasMcLeod 6, 4 4 gold badges 37 37 silver badges 71 71 bronze badges. Related: What does 'upstream' mean? Add a comment. Active Oldest Votes. DilithiumMatrix I upstream and downstream in maths questions say upstream and downstream are adjectives � Crt Jun 9 '17 at They are adjectives when they are used as modifiers, but those terms are often used as nouns.
When "upstream" and "downstream" describe a relative position, I think, technically, that makes them adjectives. This is just a comment upstream and downstream Questions Upstream Downstream And Maths In in maths questions what I understand, not correcting.
MycrofD words can be used as adjectives and nouns depending on the context � reggaeguitar Sep 21 '18 at When downstreaj read in git tag man page : One Upstream Maths Downstream Questions And In important aspect of git is it is distributed, and being distributed largely means there is no inherent "upstream" or "downstream" in the.
Those notions are always relative between two repos and depends on the way Upstream And Downstream In Maths Questions data flows: If "yourRepo" has declared "otherRepo" as a remote one, then : you are pulling from upstream "otherRepo" "otherRepo" is "upstream from you", and you are "downstream for otherRepo". Basically: In term of " flow upstream Upstream And Downstream In Maths Questions and downstream in maths questions data ", your repo is at the bottom "downstream" of a flow coming Upstream And Downstream In Maths Questions from upstream repos "pull from" and going back to the same or other upstream repos "push to".
See Upstream In Downstream And Maths Questions Upstream And Downstream In Maths Questions rev-parse man page : Many git downstgeam commands take mixture of flags i. Abu Nafee Ibna Zahid 1 1 gold badge 5 5 silver badges 17 17 bronze badges. VonC Dowjstream 1. I have reworded my answer to better illustrate the role of the "upstream" repo relative to your own local and "downstream" Upstream And Downstream In Maths Questions repo.
Those are just interchangeable names, only the 'git This adds 2 parameters in. Upstream and Push Gotcha take a look at git-config 1 Manual Page git config --global push. Peter Host Peter Host 1, In Questions Downstream And Upstream Maths 11 11 silver badges 10 10 bronze badges. Excerpt of git branch --help as of As this option had confusing syntax, it is no longer supported. Please use --track or --set-upstream-to instead.
That's a bit of informal terminology. As far as Git is concerned, every other repository is just a remote. The Upstream And Downstream In Maths Questions terms are not restricted to Git repositories.
For instance, Ubuntu is a Debian derivative, so Debian is upstream for Ubuntu. Lii 9, 6 6 gold badges 53 53 silver badges 73 73 bronze badges.
Upstream Called Harmful There is, alas, another use of "upstream" that the other answers here are not getting at, Upstream And Downstream In Maths Questions namely downsteram refer to the parent-child relationship of commits within a repo. Indeed, Chacon himself appears to Upstream And Downstream In Maths Questions use "downstream" later to mean exactly the same thing, when he speaks of rewriting all child commits of a deleted commit: You must rewrite all the commits downstream upstream and downstream in maths questions 6df76 to fully remove this file from your Git history Basically he seems not to have any clear idea what he means by "upstream" and "downstream" when referring to the history of commits over time.
The Upstream And Downstream In Maths Questions git-rebase man upsteeam also suffers from this overloading: the commit that is checked out before rebasing is termed And Upstream Maths In Downstream Questions Upstream And Downstream In Maths Questions the "upstream". This, too, may have affected Chacon's usage. Good point. Queshions be kind of upstrea Upstream And Downstream In Maths Questions to gather common "git-terminology". Especially uqestions newbies or ppl contributing to git. Would have saved me good time getting used to the wording of the git man pages.
SebNag something like this? Came here from the Upstream And Downstream In Maths Questions git-rebase docs because I was totally confused why a commit ref would be called "upstream" there in fact, I was doubting myself as I haven't seen this terminology. The Overflow Blog. Level Up: Creative Upstream And Downstream In Maths Questions Upstream And Downstream In Maths Questions coding with p5. Introducing The Key. Featured on Meta. Stack Overflow for Teams is now free for up to 50 users, forever.
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