3 ms·
IsEven API
- eesmith 5y agoI saw this in the list referenced by https://news.ycombinator.com/item?id=28232369 https://news.ycombinator.com/item?id=28232369 as "(joke)". I tested it out. Turns out to also be an API to test if a string is an integer (with optional leading +/-), because the range check occurs after the check for being an integer: % curl https://api.isevenapi.xyz/api/iseven/999999/ {"ad":"FULL SIZE Mattress. Royal Tonic, 20 year warranty. Like new. Slight urine smell. $40, call 818-555-2301","iseven":false} % curl https://api.isevenapi.xyz/api/iseven/1000000/ {"error":"Number out of range. Upgrade to isEven API Premium or Enterprise."} % curl https://api.isevenapi.xyz/api/iseven/-2342342341412340/ {"error":"Number out of range. Upgrade to isEven API Premium or Enterprise."} % curl https://api.isevenapi.xyz/api/iseven/-2342342341412340Q/ {"error":"Invalid number."}