Tutorial by Examples: git

Searching git log using some string in log: git log [options] --grep "search_string" Example: git log --all --grep "removed file" Will search for removed file string in all logs in all branches. Starting from git 2.4+, the search can be inverted using the --invert-grep...

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When you install Git, you also get its visual tools, gitk and git-gui. gitk is a graphical history viewer. Think of it like a powerful GUI shell over git log and git grep. This is the tool to use when you’re trying to find something that happened in the past, or visualize your project’s history. ...

You will need a domain name from a registrar. In the gh-pages branch of your project repository, or the main branch of your username.github.io repository, create a CNAME file with the contents www.yourdomain.com - the canonical domain. At your registrar's domain configuration page, point your doma...

When we attach the !important keyword to a mixin call, the Less compiler will automatically add the !important to all properties that are present within the mixin. For example, consider the below mixin: .set-default-props() { margin: 4px; padding: 4px; border: 1px solid black; font-wei...

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As the characters/digits can be anywhere within the string, we require lookaheads. Lookaheads are of zero width meaning they do not consume any string. In simple words the position of checking resets to the original position after each condition of lookahead is met. Assumption :- Considering non-wo...

This can be done with a bit of modification in the above regex ^(?=.{10,}$)(?=(?:.*?[A-Z]){2})(?=.*?[a-z])(?=(?:.*?[0-9]){2}).*$ or ^(?=.{10,}$)(?=(?:.*[A-Z]){2})(?=.*[a-z])(?=(?:.*[0-9]){2}).* Let's see how a simple regex ^(?=(?:.*?[A-Z]){2}) works on string abcAdefD Image Credit :- ht...

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You can list all files ignored by git in current directory with command: git status --ignored So if we have repository structure like this: .git .gitignore ./example_1 ./dir/example_2 ./example_2 ...and .gitignore file containing: example_2 ...than result of the command will be: $ g...

You can have functions in the PS1 variable, just make sure to single quote it or use escape for special chars: gitPS1(){ gitps1=$(git branch 2>/dev/null | grep '*') gitps1="${gitps1:+ (${gitps1/#\* /})}" echo "$gitps1" } PS1='\u@\h:\w$(gitPS1)$ ' It will...

class ImageCreationExample { static Image createSampleImage() { // instantiate a new BufferedImage (subclass of Image) instance BufferedImage img = new BufferedImage(640, 480, BufferedImage.TYPE_INT_ARGB); //draw something on the image paintOnI...

Include using System.Numerics and add a reference to System.Numerics to the project. using System; using System.Numerics; namespace Euler_25 { class Program { static void Main(string[] args) { BigInteger l1 = 1; BigInteger l2 = 1; ...

To prevent memory leaks, one should not forget to close an input stream or an output stream whose job is done. This is usually done with a try-catch-finally statement without the catch part: void writeNullBytesToAFile(int count, String filename) throws IOException { FileOutputStream out = null...

Items are added to a Collection by calling its .Add method: Syntax: .Add(item, [key], [before, after]) ParameterDescriptionitemThe item to store in the Collection. This can be essentially any value that a variable can be assigned to, including primitive types, arrays, objects, and Nothing.keyO...

Items are removed from a Collection by calling its .Remove method: Syntax: .Remove(index) ParameterDescriptionindexThe item to remove from the Collection. If the value passed is a numeric type or Variant with a numeric sub-type, it will be interpreted as a numeric index. If the value passed i...

Items can be retrieved from a Collection by calling the .Item function. Syntax: .Item(index) ParameterDescriptionindexThe item to retrieve from the Collection. If the value passed is a numeric type or Variant with a numeric sub-type, it will be interpreted as a numeric index. If the value pas...

/_build /cover /deps erl_crash.dump *.ez # Common additions for various operating systems: # MacOS .DS_Store # Common additions for various editors: # JetBrains IDEA, IntelliJ, PyCharm, RubyMine etc. .idea

This command, given a commit range commit1..commit2, rewrites history so that git commit author becomes also git committer: git filter-branch -f --commit-filter \ 'export GIT_COMMITTER_NAME=\"$GIT_AUTHOR_NAME\"; export GIT_COMMITTER_EMAIL=\"$GIT_AUTHOR_EMAIL\"; exp...