stash bbb

red. Because the number of bytes returned by the first query exceeds max_length_for_sort_data, the sorting adopts regular sorting. in this case, MYSQL sorts rowid and converts random IO to sequential IO, therefore, the return value is 5 before and 6 after, while the second query uses optimized sorting, without the second data retrieval process, keeping the relative position of the record after sorting. If you want to optimize the sorting of the first statement, set max_length_for_sort_data to a

return or R executes the code until it returns from the current function exit or Q abort and exit next or n execute next line pp Print variable value help help Here's a concrete example of how to debug with the PDB.Listing 1. Test code exampleImport pdb a = "AAA" Pdb.set_trace () b = "BBB" c = "CCC" final = a + B + C print

=2et:Usage:1. Vim test.pp$aaa =['/aaa/bbb/ccc/ddd ', 2] $bbb =path_to_array ($aaa [0]) $CCC =path_to_array ($aaa [0], $aaa [1]) notify{' result_$bbb ': message = [$BBB]}notify{' RESULT_$CCC ': message = [$CCC]}2, puppet apply TEST.PPnotice:compiled Catalog for puppet.mos.com in environment production in 1.03 Secondsnot

and last lines in the fileSed-e '$! {H; d;} '-e x # enter a blank line when there is only one row in the file.Sed-e '1 {$ q;} '-e' $! {H; d;} '-e x # This row is displayed when there is only one row in the file.Sed-e '1 {$ d;} '-e' $! {H; d;} '-e x # when there is only one row in the file, no output# Only display rows matching Regular Expressions (simulate "grep ")Sed-n'/regexp/P' # method 1Sed '/regexp /! D' # method 2# Show only the rows that do not match the regular expression (simulate "gre

Class loading order for JavaFirst, load order1. Initialization of the static member variable of the parent class1.1. Static code block1.2, ordinary code block1.3, no parameter constructor2. Static code block for parent class3. Initialization of a static member variable of a subclass　　3.1. Static code block　　3.2, ordinary code block3.3, no parameter constructor4. Static code blocks for subclasses5. The normal member variable of the parent class is initialized5.1. Static code block5.2, ordinary co

Debugging with the PDB The PDB is a Python-brought package that provides an interactive source code debugging feature for Python programs, including setting breakpoints, stepping through debugging, entering function debugging, viewing current code, viewing stack fragments, dynamically changing the values of variables, and so on. The PDB provides some common debugging commands, as detailed in table 1.Table 1. PDB Common commands The following is a concrete example of how to use the PDB for de

current function exit or Q abort and exit next or n execute next line pp Print variable value help help Here's a concrete example of how to debug with the PDB.Listing 1. Test code exampleImport pdb a = "AAA" Pdb.set_trace () b = "BBB" c = "CCC" final = a + B + C print finalStart debugging: Run the script directly, will stay at Pdb.set_trace (),

branch and switch it over Git co-B # create a new new_branch Based on Branch Git Co $ ID # checkout a historical commit record, but there is no branch information, switch to another branch will be automatically deleted Git Co $ id-B # checkout a historical commit record and create a branch Git Br-D # delete a branch Git Br-D # force delete a branch (mandatory when unmerged branch is deleted) Branch merge and rebase Git merge # merge branch branches to the current Branch Git merg

Git pull remote branch and merge to localgit fetch pull remote branch does not do merge ignore file. Gitignore Add file git Add. Commit all modifications git commit-am ' memo info ' push local branch to warehouse GIT push origin master:master Delete remote Branch git push origin:test from the remote code to the local repository Git pull Origin master:master create a new branch based on the branch git checkout-b dev2 master switch branch git checkout dev2 Delete Except local branch git branch-d d

be resolved first. After the conflict is resolved, the merge is completed. Use git log -- graph to view the branch merge graph. * Save the work site git stash. After saving, you can perform other work without affecting the last modification. Recovery site: 1. The content in stash is not deleted when git stash apply is restored. 2. When git

distant libraryGit push–u (not required for the first time with-U) Origin master pushes the current master branch to the remote librarygit clone https://github.com/tugenhua0707/testgit cloning from a remote repositorygit checkout–b dev Create dev branch and switch to Dev branchGit branch view all current branchesGit checkout master switches back to the master branchgit merge dev branches on the current branchgit branch–d dev Delete Dev branchGIT branch name to create a branchGit

libraryGit push–u (not required for the first time with-U) Origin master pushes the current master branch to the remote librarygit clone https://github.com/tugenhua0707/testgit cloning from a remote repositorygit checkout–b dev Create dev branch and switch to Dev branchGit branch view all current branchesGit checkout master switches back to the master branchgit merge dev branches on the current branchgit branch–d dev Delete Dev branchGIT branch name to create a branchGit

) Directory tree Browse for workspace, staging area, repository Git ls-tree–l head (view current commit in repository) pointing to the directory tree Git ls-files–s (view staging area) pointing to the directory tree Submit command: Git commit–m "Updage" (Commit staging area all modifications to repository) Git commit–a (submit to Repository, including workspace content, this command is NOT recommended!!!) ） Save Work progress Git sta