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Unzip the "stackoverflow.zip" and place stackoverflow.jsonl in this folder
{"title":"How to undo 'git add' before commit?","tags":["git","version-control","git-stage"],"question_text":"I mistakenly added files using the command:\n`git add myfile.txt`\nI have not yet run\n`git commit`\n. Is there a way to undo this, so these files won't be included in the commit?","answer_text":"You can undo\n...
{"title":"Regular expression to match line that doesn't contain a word?","tags":["regex","regex-negation"],"question_text":"I know it's possible to match a word and then reverse the matches using other tools (e.g.\n`grep -v`\n). However, I'd like to know if it's possible to match lines that\ndon't\ncontain a specific w...
{"title":"How to check if a string contains a specific word in PHP?","tags":["php","string"],"question_text":"Consider:\n`$a = 'How are you?';\nif ($a contains 'are')\n echo 'true';`\nSuppose I have the code above, what is the correct way to write the statement\n`if ($a contains 'are')`\n?","answer_text":"You can use t...
{"title":"Is Java \"pass-by-reference\" or \"pass-by-value\"?","tags":["java","methods","parameter-passing","pass-by-reference","pass-by-value"],"question_text":"I always thought Java was\npass-by-reference\n; however I've seen a couple of blog posts (for example,\nthis blog\n) that claim it's not. I don't think I unde...
{"title":"How to find all files containing specific text on Linux?","tags":["linux","text","grep","directory","find"],"question_text":"I'm trying to find a way to scan my entire Linux system for all files containing a specific string of text. Just to clarify, I'm looking for text within the file, not in the file name.\...
{"title":"Make an existing Git branch track a remote branch?","tags":["git","branch","git-branch"],"question_text":"I know how to make a new branch that tracks remote branches, but\nhow do I make an existing branch track a remote branch?\nI know I can just edit the\n`.git\/config`\nfile, but it seems there should be an...
{"title":"What is your most productive shortcut with Vim?","tags":["vim","productivity","vi"],"question_text":"I've heard a lot about\nVim\n, both pros and cons.\nIt really seems you should be (as a developer) faster with Vim than with any other editor.\nI'm using Vim to do some basic stuff and I'm at best 10 times\nle...
{"title":"Why does Google prepend while(1); to their JSON responses?","tags":["javascript","ajax","json"],"question_text":"Why does Google prepend\n`while(1);`\nto their (private) JSON responses?\nFor example, here's a response while turning a calendar on and off in\nGoogle Calendar\n:\n`while(1);[['u',[['smsSentFlag',...
{"title":"How to get the current branch name in Git?","tags":["git"],"question_text":"I'm from a Subversion background and, when I had a branch, I knew what I was working on with \"These working files point to this branch\".\nBut with Git I'm not sure when I am editing a file in NetBeans or Notepad++, whether it's tied...
{"title":"Set a default parameter value for a JavaScript function","tags":["javascript","function","arguments","default"],"question_text":"I would like a JavaScript function to have optional arguments which I set a default on, which gets used if the value isn't defined. In Ruby you can do it like this:\n`def read_file(...
{"title":"Loop through an array in JavaScript","tags":["javascript","arrays","for-loop"],"question_text":"In Java you can use a\n`for`\nloop to traverse objects in an array as follows:\n`String[] myStringArray = {\"Hello\", \"World\"};\nfor (String s : myStringArray)\n{\n \/\/ Do something\n}`\nCan you do the same in J...
{"title":"How can I determine the URL that a local Git repository was originally cloned from?","tags":["git","github","git-remote"],"question_text":"I pulled a project from GitHub a few days ago. I've since discovered that there are several forks on GitHub, and I neglected to note which one I took originally. How can I...
{"title":"How do I empty an array in JavaScript?","tags":["javascript","arrays"],"question_text":"Is there a way to empty an array and if so possibly with\n`.remove()`\n?\nFor instance,\n`A = [1,2,3,4];`\nHow can I empty that?","answer_text":"Ways to clear an existing array\n`A`\n:\nMethod 1\n(this was my original answ...
{"title":"Using java.net.URLConnection to fire and handle HTTP requests","tags":["java","http","httprequest","httpurlconnection","urlconnection"],"question_text":"Use of\n`java.net.URLConnection`\nis asked about pretty often here, and the\nOracle tutorial\nis\ntoo\nconcise about it.\nThat tutorial basically only shows ...
{"title":"Checking if a key exists in a JavaScript object?","tags":["javascript","arrays","object"],"question_text":"How do I check if a particular key exists in a JavaScript object or array?\nIf a key doesn't exist, and I try to access it, will it return false? Or throw an error?","answer_text":"Checking for undefined...
{"title":"Proper use of the IDisposable interface","tags":["c#",".net","garbage-collection","idisposable"],"question_text":"I know from reading\nthe MSDN documentation\nthat the \"primary\" use of the IDisposable interface is to clean up unmanaged resources.\nTo me, \"unmanaged\" means things like database connections,...
{"title":"How do I give text or an image a transparent background using CSS?","tags":["html","css","opacity"],"question_text":"Is it possible, using CSS only, to make the\n`background`\nof an element semi-transparent but have the content (text & images) of the element opaque?\nI'd like to accomplish this without having...
{"title":"When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?","tags":["c++","pointers","casting","c++-faq"],"question_text":"What are the proper uses of:\n`static_cast`\n`dynamic_cast`\n`const_cast`\n`reinterpret_cast`\nC-style cast\n`(type)value`\nFunction-style cast\n`type(value)`\nHow do...
{"title":"Is there a standard function to check for null, undefined, or blank variables in JavaScript?","tags":["javascript",null,"undefined"],"question_text":"Is there a universal JavaScript function that checks that a variable has a value and ensures that it's not\n`undefined`\nor\n`null`\n? I've got this code, but I...
{"title":"How do you disable browser Autocomplete on web form field \/ input tag?","tags":["html","autocomplete"],"question_text":"How do you disable\n`autocomplete`\nin the major browsers for a specific\n`input`\n(or\n`form field`\n)?","answer_text":"Firefox 30 ignores\n`autocomplete=\"off\"`\nfor passwords, opting to...
{"title":"What is attr_accessor in Ruby?","tags":["ruby"],"question_text":"I am having a hard time understanding\n`attr_accessor`\nin Ruby. Can someone explain this to me? I have done tons of Google searches. I just can't understand it fully.","answer_text":"Let's say you have a class\n`Person`\n.\n`class Person\nend\n...
{"title":"When are you supposed to use escape instead of encodeURI \/ encodeURIComponent?","tags":["javascript","encoding","query-string"],"question_text":"When encoding a query string to be sent to a web server - when do you use\n`escape()`\nand when do you use\n`encodeURI()`\nor\n`encodeURIComponent()`\n:\nUse escape...
{"title":"How to replace master branch in git, entirely, from another branch?","tags":["git","merge","git-branch"],"question_text":"Possible Duplicate:\nChange the current branch to master in git\nI have two branches in my git repo:\nmaster\nseotweaks (created originally from master)\nI created\n`seotweaks`\nwith the i...
{"title":"What are the nuances of scope prototypal \/ prototypical inheritance in AngularJS?","tags":["javascript","angularjs","inheritance","prototype","prototypal-inheritance"],"question_text":"The\nAPI Reference Scope page\nsays:\nA scope\ncan\ninherit from a parent scope.\nThe\nDeveloper Guide Scope page\nsays:\nA ...
{"title":"How to count all the lines of code in a directory recursively?","tags":["bash","shell"],"question_text":"We've got a PHP application and want to count all the lines of code under a specific directory and its subdirectories. We don't need to ignore comments, as we're just trying to get a rough idea.\n`wc -l *....
{"title":"How to exit the VIM editor?","tags":["vim","vi"],"question_text":"I'm stuck and cannot escape. It says:\n`\"type :quit<Enter> to quit VIM\"`\nbut when I type that it simply appears in the object body.","answer_text":"Hit the\nEsc\nkey; that goes into command mode. Then you can type\n`:q`\nto quit (short for\n...
{"title":"Vertically align text next to an image?","tags":["css","vertical-alignment"],"question_text":"Why won't\n`vertical-align: middle`\nwork? And yet,\n`vertical-align: top`\ndoes\nwork.\n`<div>\n <img style=\"width:30px;height:30px\">\n <span style=\"vertical-align:middle\">Doesn't work.<\/span>\n<\/div>`","answe...
{"title":"How to determine whether my calculation of pi is accurate?","tags":["algorithm","math","language-agnostic","pi"],"question_text":"I was trying various methods to implement a program that gives the digits of pi sequentially. I tried the\nTaylor series\nmethod, but it proved to converge extremely slowly (when I...
{"title":"How do I randomly select an item from a list using Python?","tags":["python","list","random"],"question_text":"Assume I have the following list:\n`foo = ['a', 'b', 'c', 'd', 'e']`\nWhat is the simplest way to retrieve an item at random from this list?","answer_text":"Use\n`random.choice`\n:\n`import random\nf...
{"title":"Check if a program exists from a Bash script","tags":["bash","shell"],"question_text":"How would I validate that a program exists?\nWhich would then either return an error and exit or continue with the script?\nIt seems like it should be easy, but it's been stumping me.","answer_text":"Yes; avoid\n`which`\n. ...
{"title":"How does Trello access the user's clipboard?","tags":["javascript","coffeescript","clipboard","trello"],"question_text":"When you hover over a card in\nTrello\nand press\nCtrl\n+\nC\n, the URL of this card is copied to the clipboard. How do they do this?\nAs far as I can tell, there is no Flash movie involved...
{"title":"How to efficiently count the number of keys\/properties of an object in JavaScript?","tags":["javascript","performance","properties","count","key"],"question_text":"What's the fastest way to count the number of keys\/properties of an object? It it possible to do this without iterating over the object? i.e. wi...

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language: - en tags: - nlp - retrieval - rag - faiss - bm25 - semantic-search - stackoverflow - code-generation - information-retrieval size_categories: - 10M<n<100M pretty_name: StackFix Indexes (Pre-Built)

📚 StackFix Indexes (Pre-Built)

Pre-built FAISS and BM25 indexes for high-quality StackOverflow retrieval.

Designed for:

RAG systems
Agentic debugging
Code retrieval
LLM augmentation
Semantic search pipelines

These indexes were generated using the top-scoring 1.1 million StackOverflow Q&A pairs and optimized for programming-related retrieval tasks.

📊 Dataset Statistics

Metric	Value
Total Documents	1,102,568 Q&A pairs
Selection Strategy	Highest-scored answer per question
Average StackOverflow Score	3.31
Embedding Model	`BAAI/bge-base-en-v1.5`
Embedding Dimensions	768
Similarity Metric	Cosine Similarity
Vector Normalization	Enabled