I have a Drupal 8 site. And I have approximately 5 pages in a site.  For example if a user hits login from the contact-us page the user should not redirect anywhere, they should stay on same page. How can I accomplish this?
I would like to redirect users after they log in. Is it possible to use hook_user_login() to make the redirection? How do I add the parameter for the redirection?
Why do the eigenvectors for two similar matrixes differ by a large amount Comparing SVM and logistic regression Can someone please give me some intuition as to when to choose either SVM or LR? I want to understand the intuition behind what is the difference between the optimization criteria of learning the hyperplane of the two, where the respective aims are as follows:     SVM: Try to maximize the margin between the closest support vectors LR: Maximize the posterior class probability    Let's consider the linear feature space for both SVM and LR.  Some differences I know of already:   SVM is deterministic (but we can use Platts model for probability score) while LR is probabilistic. For the kernel space, SVM is faster (stores just support vectors) How to add horizontal cylinder at end of cube How do I change the `enumerate` list format to use letters instead of the default Arabic numerals? How to fix AppArmor `could not open` error when installing php+mysql? How exactly does lighting affect combat? I understand that there are different types of lighting (dim, bright, complete darkness), but I haven't been able to find anywhere in the DMH or PHB that specifically describes how these different types of light sources affect combat.   What impact does complete darkness have on players being able to see the locations of the monsters in the room? What impact does complete darkness have on combat rolls against monsters? Could anyone point me to a book/page that contains some more detailed information on this?   Thanks! "GPT detected. Please create a BIOS-Boot partition" while using boot-repair Since I updated Windows to 8.1 my Grub menu disappeared. I ran Ubuntu using Live USB, I used Boot-Repair but something went wrong. If I click on Reccomended repair I get this error:     GPT detected. Please create a BIOS-Boot partition (>1MB, unformatted filesystem, bios_grub flag). This can be performed via tools such as Gparted. Then try again. Alternatively, you can retry after activating the [Separate /boot/efi partition:] option.   So I tried to set my sda9 (I think that it's the Ubuntu system partition, since it's ext4) with the bios_grub flag and then to run Boot-Repair again. It didn't work.  I don't know what to do. My Grub was working fine (using UEFI) before I updated Windows.  I removed the bios_grub flag. Then I used fsck and it didn't find any error. So I tried again with Boot-Repair but it always gives me the "GPT detected" error. My boot is on UEFI mode, Secure Boot is "off".  When I boot my PC with SecureBoot OFF, I can reach the GRUB menu. But it's empty (the only voice is "System Setup").  I mounted my Ubuntu system disk:  sudo mount /dev/sda9 /mnt   and the other things:  sudo mount --bind /dev /mnt/dev sudo mount --bind /proc /mnt/proc sudo mount --bind /sys /mnt/sys   I logged on the system with chroot:  sudo chroot /mnt   I re-installed grub:  grub-install /dev/sda update-grub2   But it still doesn't work. Enumerate paragraphs and subparagraphs like sections but with letters How come  with  set to dragons didn't stop 's effect from being activated? How do we control web page caching, across all browsers? Our investigations have shown us that not all browsers respect the HTTP cache directives in a uniform manner.  For security reasons we do not want certain pages in our application to be cached, ever, by the web browser. This must work for at least the following browsers:   Internet Explorer 6+ Firefox 1.5+ Safari 3+ Opera 9+ Chrome   Our requirement came from a security test. After logging out from our website you could press the back button and view cached pages. Recently I bought a new laptop that came with Windows 10 installed but not activated. I use both Windows 10 and Ubuntu 18.04, so I tried making a dual boot with a USB flash drive. It was recognized by the BIOS, I tried Try Ubuntu without installing and Install Ubuntu. With both options the PC freezes, and I need to press the power button. It's shown very fast some errors that are listed below:  [ 0.064522] ACPI Error: Method parse/execution failed \_SB.PCID.RPOB.PXSX, AE_NOT_FOUND (20170831/parse-550)  [ 0.066316] ACPI Error: [_SB.PCID.RPOB.PXSX], Namespace lookup failure, AE_NOT_FOUND (20170831/download2-191)  [ 0.066325] ACPI Error: AE_NOT_FOUND, During name lookup/catalog (20170831/psobject-252)  [ 0.246232] ACPI Exception: AE_NOT_FOUND. Evaluating _PRS (20170831/pci_link-176)  [ 0.246248] ACPI Exception: AE_NOT_FOUND. Evaluating _PRS (20170831/pci_link-176)  [ 0.246260] ACPI Exception: AE_NOT_FOUND. Evaluating _PRS (20170831/pci_link-176)  [ 0.246272] ACPI Exception: AE_NOT_FOUND. Evaluating _PRS (20170831/pci_link-176)  [ 0.246285] ACPI Exception: AE_NOT_FOUND. Evaluating _PRS (20170831/pci_link-176)  [ 0.246297] ACPI Exception: AE_NOT_FOUND. Evaluating _PRS (20170831/pci_link-176)  [ 0.246310] ACPI Exception: AE_NOT_FOUND. Evaluating _PRS (20170831/pci_link-176)  [ 0.246322] ACPI Exception: AE_NOT_FOUND. Evaluating _PRS (20170831/pci_link-176)   I'm using NVIDIA GTX 1050 Ti graphics card and Intel i7-8750H processor.  I talked to the customer support and they just said that my laptop might not be compatible with Ubuntu. I also tried Ubuntu 16.04, but there were no changes.  EDIT: Thanks a lot for all the answers, but unfortunatelly I returned the PC to the store, neither the technical support found a solution for the problem, they just said: "Our PCs are just able to work with Windows, anyother OS might work but without our warranty". How to clear the Skype chat history how clear the skype chat history ? Correct position of "only" Problem (1.8): There are ten girls and four boys in Mr. Fat's combinatorics class. In how many ways can these students sit around a circular table such that no boys are next to each other.   My Attempt: Total number of ways in which both boys are girls can be arranged on a circular table is $13!$ and the number of ways in which any two boys can be together is $2!*12!$. Therefore the answer is $13!-2*12!=11*12!$. Is this answer correct? I am asking this because I am confused about the exact meaning of the line "no boys are together." Does this mean that no two/three/four boys are together?   Note: Meanwhile I have made another attempt on the problem. We can place the $10$ girls on the circular table in $9!$ ways. Then we are left with $10$ spots which need to be filled with $4$ boys. This can be done in $P^{10}_4$ ways. Thus, the number of ways is $9!P^{10}_4$. Why does N[1.000 01, 10] return 1.00001, but N[1.000 001, 10] returns only 1.? Should I vote to close a duplicate question, even though it's much newer, and has more up to date answers? I have seen this many times, a question is being asked because a previous, duplicate question was asked and answered a few years ago and has no longer relevant answers.  The  is to edit the old question, or add new answers to it, but it is not always happening.  I was wondering, should I still mark it as duplicate and vote to close it? Or just leave it as is? Having just  from any of the queues, it was reviewing close votes; however, this audit was flawed in that I didn't even cast a close vote.  Often I press the Close button to preview greater detail and sentiment of the closure, spawning the Why should this question be closed dialog box:    Especially for duplicates, where functionality is solely dependent on spawning this dialog.  From Closing > Duplicate, I can search or view selected duplicates:    Although, I realize general closure reasons are summarized on the page:    This question had 6-upvotes, but seemed very localized referencing subjective query is "taking too long" and even had a sqlfiddle link.  Maybe overly broad regarding performance tuning, the OP was posting like a forum with two answer posts to his own question  and  with one of those answers asking follow-up questions.    Wanting to gauge community response, current closure totals struck my curiosity.  So, I pressed the Close button and boom - oh, the humanity!  I failed, and didn't even cast a close vote.    Votes are not cast until a reason for closure is selected and Vote to Close is pressed.  Taking any review very seriously on this site, it only seems fair that my review quality is tested through actionable steps instead of clicking for more detailed information, leveraging the functional design of the close vote user interface.  Sure, it's complex to seed fake vote totals, and then there's controversy of mindless voting in the majority or people who simply cherry pick 4-vote questions.  Still though, it seems unfair I should hesitate to review further information of vote totals and duplicates before skipping due to the implementation of this audit. Create longer arrows Is every metric space a subspace of some connected metric space? How can I determine the name of the Bash script file inside the script itself?  Like if my script is in file runme.sh, then how would I make it to display "You are running runme.sh" message without hardcoding that?