Mark Needham markhneedham.com

R: data.table - Finding the maximum row

markhneedham.com·554w

IntelliJ 14.1.5: Unable to import maven project

markhneedham.com·554w

R: data.table - Comparing adjacent rows

markhneedham.com·554w

R: Querying a 20 million line CSV file - data.table vs data frame

markhneedham.com·555w

SparkR: Add new column to data frame by concatenating other columns

markhneedham.com·555w

SparkR: Error in invokeJava(isStatic = TRUE, className, methodName, ...) : java.lang.ClassNotFoundException: Failed to load class for data source: csv.

markhneedham.com·555w

Neo4j: Summarising neo4j-shell output

markhneedham.com·560w

Python: Extracting Excel spreadsheet into CSV files

markhneedham.com·560w

Unix: Stripping first n bytes in a file / Byte Order Mark (BOM)

markhneedham.com·560w

Unix: Redirecting stderr to stdout

markhneedham.com·561w

Sed: Using environment variables

markhneedham.com·561w

Java: Jersey - java.lang.NoSuchMethodError: com.sun.jersey.core.reflection.ReflectionHelper. getContextClassLoaderPA()Ljava/security/PrivilegedAction;

markhneedham.com·561w

Neo4j 2.2.3: Unmanaged extensions - Creating gzipped streamed responses with Jetty

markhneedham.com·561w

Record Linkage: Playing around with Duke

markhneedham.com·562w

Spark: Convert RDD to DataFrame

markhneedham.com·562w

Spark: pyspark/Hadoop - py4j.protocol.Py4JJavaError: An error occurred while calling o23.load.: org.apache.hadoop.ipc.RemoteException: Server IPC version 9 cannot communicate with client version 4

markhneedham.com·562w

Spark: Processing CSV files using Databricks Spark CSV Library

markhneedham.com·562w

Neo4j: Cypher - Removing consecutive duplicates

markhneedham.com·563w

Neo4j: MERGE'ing on super nodes

markhneedham.com·563w

Python: Difference between two datetimes in milliseconds

markhneedham.com·563w

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