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Python 2021-09-17 18:24:02
Decision tree learning algorithm for classification
# Decision tree learning algorithm for classification from pyspark.ml.linalg import Vectors from pyspark.ml.feature import StringIndexer df = spark.createDataFrame([ (1.0, Vectors.dense(1.0)), (0.0, Vectors.sparse(1, [], []))], ["label", &q... Add solution -
SQL 2021-09-16 00:28:02
traccar mysql
<entry key='database.driver'>com.mysql.cj.jdbc.Driver</entry> <entry key='database.url'>jdbc:mysql://[HOST]:3306/[DATABASE]?serverTimezone=UTC&useSSL=false&allowMultiQueries=true&autoReconnect=true&useUnicode=yes&char... Add solution -
Javascript 2021-09-15 15:50:02
javascript getHours from epoch
function convert(t) { const dt = new Date(t); const hr = dt.getUTCHours(); const m = "0" + dt.getUTCMinutes(); return hr + ':' + m.substr(-2) } console.log(convert(1542895249079)); console.log(convert(1542897015049)); console.log(con... Add solution -
Other 2021-09-14 09:07:01
utc full form in time
Universal Time Coordinated: Prior to 1972, this time was called Greenwich Mean Time (GMT) but is now referred to as Coordinated Universal Time or Universal Time Coordinated (UTC). It is a coordinated time scale, maintained by the Bureau International d... Add solution -
C# 2021-09-14 01:26:02
c# 2 timespan return yesterday
const int SECOND = 1; const int MINUTE = 60 * SECOND; const int HOUR = 60 * MINUTE; const int DAY = 24 * HOUR; const int MONTH = 30 * DAY; var ts = new TimeSpan(DateTime.UtcNow.Ticks - yourDate.Ticks); double delta = Math.Abs(ts.TotalSeconds); if (delta... Add solution
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