Calculations see also W3C draft .container { width: calc(100% - 80px); }

Restrict Network Can be useful when using a third-party image that we do not trust Run with no network docker run --network none <image> Run with private isolated network At least containers attached to this network can talk with another docker network create --internal my_isolated_network docker run --network my_isolated_network <image> Block using firewall e.g. using iptables or ipfw # Get container's IP docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' <container_name> # Block all outbound connections from that IP sudo iptables -I DOCKER-USER -s <container_ip> -j DROP ...

Favorites Spare my time when using static imports .. Window > Preferences > Java > Editor > Content Assist > Favorites: com.google.common.collect.Lists com.jayway.restassured.matcher.RestAssuredMatchers com.jayway.restassured.RestAssured io.restassured.matcher.RestAssuredMatchers io.restassured.RestAssured org.hamcrest.MatcherAssert org.hamcrest.Matchers org.mockito.Mockito javaslang.API javaslang.Predicates Template to insert a static logger instance Go Windows > Preferences > Java > Editor > Templates > New … Enter logger as name and as template: ${:import(org.slf4j.Logger,org.slf4j.LoggerFactory)} private static final Logger LOG = LoggerFactory.getLogger(${enclosing_type}.class); Afterwards you’re able to type logger in your code and ctrl+space gives the option to insert the logger ...

Configure address bar to return search results Enter about:config in the address bar Search for the key keyword.url Modify the value for your search engine of choice .. e.g. for the google search: http://www.google.com/search?q=

Show commits from another branch not contained in current branch git cherry -v otherbranch + f7d6a569bb6912aac97fce9ac92c4302863fb0d9 thecommit Create empty commit sometimes necessary for build/deploy pipelines …​ git commit --allow-empty -m "Empty-Commit" Cherry pick without commit git cherry-pick -n HASH Using vimdiff for diff set it via git config git config --global diff.tool vimdiff git config --global merge.tool vimdiff set it via ~/.gitconfig [diff] tool = vimdiff [merge] tool = vimdiff Using vscode as diff and mergetool You need to have the shell integration installed (code binary in PATH) ...

GitHub Actions Step to check variables and redistribute as env The following step does .. check of given variables are set, if not, exit with an error that is visible in the action’s log provide the given input as environment variable in GITHUB_ENV - name: configuration env: VAR1: ${{ needs.configure.outputs.something }} VAR2: ${{ vars.SOMETHING_OTHER }}/ VAR3: "something_other_other" run: | for var in VAR1 VAR2 VAR3; do [ -n "${!var}" ] || { echo "$var is missing"; exit 1; }; echo "$var=${!var}" >> "$GITHUB_ENV"; done ...

Generate AsciiDoc Documentation and Publish it with GitLab Pages We setup a repository and add a directory named docs there .. this is the home of our AsciiDoc files. We’re using asciidoctor/docker-asciidoctor as Docker image for tool provisioning This is the .gitlab-ci.yml, we’re running the stage only when something in the docs directory has changed. stages: - "Build docs" # The name of the job activates the GitLab pages publication pages: image: asciidoctor/docker-asciidoctor stage: "Build docs" tags: - build script: - sh ./gen_docs.sh - mv output public only: refs: - master changes: - /docs/* artifacts: paths: - public expose_as: 'Documentation Archive' ...

Importing XML Data in Google Sheets Use the XMLIMPORT function The syntax is XMLIMPORT("url", "xpath") e.g. for importing an XML sitemap =IMPORTXML("https://www.hascode.com/sitemap.xml", "//\*[local-name()='url']/*[local-name()='loc']") Select the preceding cell in Google Sheets =INDIRECT(ADDRESS(ROW()-1,COLUMN()) Create a Todo List Counter in Google Sheets Each empty cell is a todo, each filled cell is done. That allows us the following output, that counts all preceding cells of each type: ="Done: "&(COUNTA(B3:INDIRECT(ADDRESS(ROW()-1,COLUMN())))&" Todo: " &COUNTIF(B3:INDIRECT(ADDRESS(ROW()-1,COLUMN())),"")) This outputs a label like "Done: 35 Todo: 142" ...

Common operations Add Helm Repository helm repo add NAME URL e.g. for the Bitnami repository: helm repo add bitnami https://charts.bitnami.com/bitnami 1 ↵ "bitnami" has been added to your repositories List Repositories helm repo list 130 ↵ NAME URL bitnami https://charts.bitnami.com/bitnami Searching in a Helm Repository helm search repo wordpress NAME CHART VERSION APP VERSION DESCRIPTION bitnami/wordpress 15.2.30 6.1.1 WordPress is the world's most popular blogging ... bitnami/wordpress-intel 2.1.31 6.1.1 DEPRECATED WordPress for Intel is the most popu... ...

Live Templates JUnit 5 Test @org.junit.jupiter.api.Test @org.junit.jupiter.api.DisplayName("$NAME$") void $METHOD$() throws Exception { $END$ } Figure 1. IntelliJ Live Template Editor Edit Variables: NAME METHOD: default-value camelCase(NAME) Figure 2. Editing template variables SLF4J Logger Template private static final org.slf4j.Logger log = org.slf4j.LoggerFactory.getLogger( $CLASS$.class ); Edit variables: CLASS: expression: className() Favorite Shortcuts Select whole block in Editor Cmd+Tab+Down Select similar blocks in editor Ctrl+G Copy the absolute Path of the current File into Clipboard Cmd+Shift+C ...