Product
Socket Now Supports uv.lock Files
Socket now supports uv.lock files to ensure consistent, secure dependency resolution for Python projects and enhance supply chain security.
binarysearch
Advanced tools
pure js binary search for sorted javascript arrays||array like objects. returns any || last || first || closest matched key for value, or slice between 2 values where values need not exist.
pure js binary search for sorted javascript arrays||array like objects. returns any || last || first || closest matched key for value, or slice between 2 values where values need not exist.
returns the matched key or -1 if not found.
var bs = require('binarysearch');
bs([1,4,7,9,22,100,1000],7) === 2
//true
bs([1],5) === -1
// true
search with user defined comparitor function
bs([5,6,7,8,9],9,function(value,find){
if(value > find) return 1;
else if(value < find) return -1;
return 0;
}) === 4
// true
find first key that matches
bs.first([0,1,2,3,3,3,4],3) === 2
find last key that matches
bs.last([,1,2,3,3,3,4],3) === 4
find closest key to where or key of searched value in the array
bs.closest([1,2,4,5,6],3) === 1
bs.closest([1,2,4,5,6],0) === 0
bs.closest([1,2,4,5,6],200) === 6
// non unique matching/matching at end of series
bs.closest([1,2,4,5,5,5,6],5) === 3
bs.closest([1,2,4,5,5,5,6],5,{end:true}) === 5
query for rangeValue (inclusive). returns sliced values.
bs.rangeValue([1,2,3,3,3,4,4,6],3,5) === [3,3,3,4,4]
or simply access the array offsets directly as [start,end]
bs.range([1,2,3,3,3,4,4,6],3,5) === [2,6]
insert a value into a sorted array.
var arr = [1,3,4];
bs.insert(arr,2) === 1
// returns the key it inserted into
arr[1] === 2
// true
when you insert values and there are duplicates the default behavior is to insert the new value after the other same values. if you pass option.unique = true the key's value is replaced with the new value
var arr = [1,2,3];
bs.insert(arr,2)
// arr is [1,2,2,3]
var arr = [1,2,3];
bs.insert(arr,2,{unique:true});
// arr is [1,2,3]
create an object index
var index = bs.indexObject({a:2,b:1});
// [{k:'b',v:1},{k:a,v:2}];
search an object index
var obj = {a:{id:22,name:'bob'},b:{id:11,name:'joe'}};
// [{k:'b',v:11},{k:'a',v:22}];
index = bs.indexObject(obj,function(o1,o2){
if(o1.id > o2.id) return 1
else if(o1.id < o2.id) return -1;
return 0;
});
obj[bs(index,'bob').k] === {id:22,name:'bob'};
@rvagg https://github.com/rvagg for making leveldb bindings for node these search functions emulate leveldb query behavior.
FAQs
pure js binary search for sorted javascript arrays||array like objects. returns any || last || first || closest matched key for value, or slice between 2 values where values need not exist.
The npm package binarysearch receives a total of 36,102 weekly downloads. As such, binarysearch popularity was classified as popular.
We found that binarysearch demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Product
Socket now supports uv.lock files to ensure consistent, secure dependency resolution for Python projects and enhance supply chain security.
Research
Security News
Socket researchers have discovered multiple malicious npm packages targeting Solana private keys, abusing Gmail to exfiltrate the data and drain Solana wallets.
Security News
PEP 770 proposes adding SBOM support to Python packages to improve transparency and catch hidden non-Python dependencies that security tools often miss.