GitLab

* Fix loss computation

* fix test

* Optimize ranking loss computation.

* redir log to python console

* fix pylint

* Apply suggestions from code review

* Update basic.py

* Apply suggestions from code review
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* Update c_api.h

* Apply suggestions from code review

* Apply suggestions from code review

* super-minor: better wording
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>
Co-authored-by: StrikerRUS <nekit94-12@hotmail.com>

* [R-package] [docs] replace build_r_site.R with pkgdown::build_site()

* fix paths

* fix continuation

* new_process arg

* bump XCode version at Travis

* try new AppleClang

* get back to gcc

* [R-package] [docs] fix warnings in pkgdown sitte  building

* trying to get better Travis logs

* trying to get better Travis logs

* undo testing fix

* undo testing fix

* empty commit

* [R-package] use processx to speed up builds

* different fix

* echoing more frequently

* fix it

* more stdout

* use print() instead of message()

* shell tricks

* fix message

* travis

* Update .ci/test_r_package.sh
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* [R-package] [docs] remove devtools dependency for docs builds

* linting

* updating docs conda env

* empty roxygenize()

* env for R libraries

* get logs

* remove comment

* added pkgdown URLs

* more paths

* fix incorrect YAML keys

* update DESCRIPTION URL link

* more URL changes

* revert DESCRIPTION changes

* remove ca-certificates

* empty commit

* Update docs/conf.py
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* empty commit

* remove outdated line in build_r.R
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* fix conflicts

* Update R-package/src/install.libs.R

* empty commit

* [R-package] add conda dir for LIBR_CORE_LIBRARY (fixes #3045)

* empty commit

* Path smoothing

* Try to fix issue with gpu version.

* Fix failing CI for R package.

* Minor fixes.

* Minor refactor.

* Restore old code to get CI working.

* Fix style issues.

* Fix ci for R package.

* Minor fixes for docs and code style.

* Update docs.

* [docs] updated bug report template

* Apply suggestions from code review
Co-Authored-By: Nikita Titov <nekit94-08@mail.ru>

* clean up issue template

* Update .github/ISSUE_TEMPLATE/BUG_REPORT.md
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* Update .github/ISSUE_TEMPLATE/BUG_REPORT.md
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* Update .github/ISSUE_TEMPLATE/BUG_REPORT.md
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* [R-package] CMake fixes to support MSVC

* simplifications

* Apply suggestions from code review
Co-Authored-By: Nikita Titov <nekit94-08@mail.ru>

* removed MSVC_RUNTIME_LIBRARY property

* fixed FindLibR search for LIBR_CORE_LIBRARY

* Update CMakeLists.txt
Co-Authored-By: Nikita Titov <nekit94-08@mail.ru>

* made R.lib linking more explicit

* add R_DOT_LIB_FILE to cache

* changed R.lib CMake name

* fix placementt tof R_MSVC_CORE_LIBRARY

* empty commit

* change MSVC library name

* one more name change
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* Fix loss computation

* fix test

* first test of appveyor

* strings are strings

* lil bit of build script

* fixing paths

* removed unnecessary file

* updated CRAN URL

* added a lot more printing

* fixing paths

* more stuff

* fixed paths

* more stuff

* more path guessing

* even more paths

* more stuff

* moar logz

* and now for something totally different

* please work

* ok could be a thing

* changing directories

* we might be in business

* fixed install syntax

* tryinv mingw

* more mingw

* ignore Suggests check

* trying Azure DevOps

* just run bare minimum for Azure DevOps

* fixed  build dir thing

* trying to set libPaths

* more testing

* trying R 3.6.3

* R 3.6.3

* this feels right

* still messing around with libraries

* more paths

* removed duplication in Windows testing code

* simpler

* fixed conda stuff

* more conda stuff

* more fixes

* fixed testing script

* moved AppVeyor setup to the top

* commenting

* ch-ch-ch-ch-chaaaanges

* paths

* plz work

* fixed conda stuff in Windows CI

* uncommented stuff to test a full build

* fixed quotes and removed some unnecessary stuff

* added install.libs.R change

* quotes are impoortant

* added commented-out stuff back in

* added Windows script, download retries, and MSVC linking

* minor fixes

* cleaned up debugging code in FindLibR

* cleaned up debugging code and moved R first in CI

* fixed vsts-ci indentation

* cut documentation stuff out of MSVC build

* fix R CMD check for Azure

* misc whitespace changes

* Added echoing of build logs from R CMD check

* cut out more documentation tests

* fixed NOTE about imports from Matrix

* moved some changes out of this PR and into #2963

* fixed whitespace stuff

* added check on number of NOTES

* adding better checks

* fixing check on NOTEs

* removing unnecessary variable

* Update .ci/test_r_package_windows.ps1
Co-Authored-By: Nikita Titov <nekit94-08@mail.ru>

* some changes

* fix quoting

* trying MINGW on Azure DevOps

* fixing paths

* more paths

* fixing paths

* testing paths

* fixing slashes

* pinned CTAN mirror

* get better logs

* made sure Azure finds MinGW, fixed search for LIBR_CORE_LIBRARY, stopped building R docs on Azure

* Apply suggestions from code review
Co-Authored-By: Nikita Titov <nekit94-08@mail.ru>

* added CXX, CC for Windows builds and changed back to building docs on all MINGW builds

* stored LIBR_CORE_LIBRARY hints in one variable

* Apply suggestions from code review
Co-Authored-By: Nikita Titov <nekit94-08@mail.ru>

* changes from code review

* increased parallel builds for Azure CI

* Apply suggestions from code review
Co-Authored-By: Nikita Titov <nekit94-08@mail.ru>
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

[R-package] fixed best_iter and best_score when training data is passed (fixes #2295, #2525) (#2961)

* [R-package] fixed best_iter and best_score when early_stopping is not used (fixes #2295)

* fixed tests