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Linear Equations Assignment 10 - 0 | Equations | Fraction (Mathematics)

Join Stack Overflow to upstream and downstream questions linear equations quant, share knowledge, and build your career. Connect and share knowledge within a single location that is structured and easy to search. Information flowed "downstream" to you. When you make changes, you usually want to send them back " upstream " so they make upstream and downstream questions linear equations quant into that repository so that everyone pulling from the same source is working with all the equahions changes.

This is mostly a social issue of how everyone can coordinate their work rather upstream and downstream questions linear equations quant a technical requirement of source control. That usually means they had to adjust the original sources so they could create a package for their. 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 notions are always relative between two repos 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 to the remote repos you have declared.

In term of " flow of data ", your repo is at the bottom "downstream" of a flow coming from upstream repos "pull upstrsam 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 branch rebased upstream recreated the commits of the same branch you have locally.

That is bad because for one "upstream" repo, there can be upsteeam downstream repos i. Again, with 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 an error message otherwise:. Just issue :. For every branch that is up to date or successfully pushed, add upstream tracking reference, used by argument-less git-pull 1 and other commands.

For more information, questionw branch. Defines, together with branch. It defaults to origin if no remote is configured. Generally speaking, upstream is where you cloned from the upstream and downstream questions linear equations quant. Downstream is any project that integrates your work with other works. There upstream and downstream questions linear equations quant, alas, another use of "upstream" that the other answers here are not getting at, namely to refer to the upstream and downstream questions linear equations quant relationship of commits within a repo.

Scott 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", or why the geometry of such a pure straight-line graph should be described "directly upstream", is completely unclear and probably arbitrary.

The man page for git-merge does equatinos far better job of explaining this relationship when it says that "the current quxnt head is an ancestor of the named commit.

Indeed, Chacon himself appears to use "downstream" later to mean exactly the same thing, when he speaks quqnt rewriting equation child dpwnstream of a deleted commit:.

You must quznt all the commits downstream from 6df76 to fully remove this file from your Git history. Basically he seems not to have any clear idea what he qufstions by "upstream" and "downstream" when referring 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 descendants.

Do not use "upstream" or "downstream" loosely in this situation. The man page does go on to describe a situation where the use of "upstream" is legitimate: fast-forwarding often happens when "you are tracking an upstream repository, you have committed no local changes, and now you want to update to a newer upstream revision. Stack Overflow for Teams � Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Learn. Asked 10 years, 11 months ago. Active 9 months ago. Viewed k times. ThomasMcLeod 6, 4 4 gold badges 37 pinear silver badges 71 71 bronze badges. Add a comment. Active Oldest Votes. DilithiumMatrix 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 on what I understand, not correcting.

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 notions are always relative between two repos and depends on the way 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 of data ", your repo is at the bottom "downstream" of a flow coming from upstream repos "pull from" and going back to the same or other upstream repos "push to". See rev-parse man page : Many git porcelainish commands take mixture of flags i. Abu Nafee Ibna Zahid 1 1 gold badge 5 5 silver badges 17 17 bronze badges. VonC VonC 1.

I have reworded my answer to better illustrate the role of the "upstream" repo relative to your own local and "downstream" repo. 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, 11 11 silver badges 10 10 bronze badges. Excerpt of upstream and downstream questions linear equations quant branch --help as of Upstream and downstream questions linear equations quant this option had confusing syntax, it is no longer supported.

Please use --track or --set-upstream-to instead. As far as Git is concerned, every other repository is just a remote. The 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, namely to refer to the parent-child relationship of commits within a repo.

Indeed, Chacon himself appears to 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 from 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 git-rebase man page also suffers from this overloading: the commit that is checked out before rebasing is termed the "upstream". Good point. Would be kind upstream and downstream questions linear equations quant helpful to gather common "git-terminology". Especially for 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? The Overflow Blog. Upstream and downstream questions linear equations quant A new language designed for building single page applications. Level Up: Creative coding with p5. Featured on Meta. Stack Overflow for Teams is now free for up to 50 users, forever. Linked See more linked questions. Related Hot Network Upstream and downstream questions linear equations quant. Question feed.

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Example Question 2: A man rows downstream 30 km and upstream 12 km. If he takes 4 hours to cover each distance, then the velocity of the current is:. Solution: In this question, downstream and upstream speeds are not given directly. Hence you have to calculate them first. Step 3: Calculation of speed of stream You have to substitute values got in steps 1 and 2 in below formula to find the speed of the stream.

In this type, you have to find distance of places based on given conditions. Below example will help you to understand better. If in a river running at 2 km an hour, it takes him 40 minutes to row to a place and return back, how far off is the place?

The man rows to a particular place and comes back. You have to calculate the distance of this place. Let this distance be X. See the below diagram to understand clearly. Man starts from A, travels to B and comes back. Therefore, above equation becomes,. Also we have calculated downstream and upstream speeds at the start see values 1 and 2.

In question, you can see that the man takes 40 minutes to travel to B and come back to A. You have to convert this to hours and apply in above equation. When the boat moves with the current of the river i. It is known as downstream speed. Remember it with DOWN as going down the hill means towards the direction of the force speed of the river.

Type 1 : When the distance covered by boat in downstream is same as the distance covered by boat upstream. The speed of boat in still water is x and speed of stream is y then ratio of time taken in going upstream and downstream is,. It takes him twice as long as to row up as to row down. Find the rate of the stream of the river. A man can row certain distance downstream in 2 hours and returns the same distance upstream in 6 hours.

If the speed of stream is 1. Find the distance between two places? A professional swimmer challenged himself to cross a small river and back. If it took him 15 mins more to cover the distance upstream than downstream, then find the width of the river? Find the average speed of a boat in a round trip between two places 18 km apart.

Download Gradeup , the best government exam app for Preparation. Umesh Kumar Jan 22, Solving 3 and 4 , we get. Put in 3 , we get. Hence, the speed of the motor boat in still water is 20 kmph and rate of flow of the stream is 5 kmph. X Thank you for registering with us. Please login with the same password. Encyclopedia of academic concepts Articles and project ideas Expert opinion on doubts Sample papers, board papers and exam tips Latest updates from education sector.

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