uarun

Intellij IDEA - Cheat Sheet (aka most useful shortcuts)

Note: Some of these keymapping are specific to IdeaVim plugin. If you don't use IdeaVim (what' wrong with you :)), I've tried to point out where they differ, but I could have missed a few

Coding Session

Parameter documentation for Method Calls

• Ctrl-P - Popup parameter documentation for method calls

jkeam

import org.apache.poi.ss.usermodel.*
import org.apache.poi.hssf.usermodel.*
import org.apache.poi.xssf.usermodel.*
import org.apache.poi.ss.util.*
import org.apache.poi.ss.usermodel.*
import java.io.*

class GroovyExcelParser {
  //http://poi.apache.org/spreadsheet/quick-guide.html#Iterator

rschumm

mit dem Matcher können komplexere Vergleiche mit "assertThat" getestet werden, hier ein einfaches Beispiel, 
welches testet, dass zwei Daten am gleichen Tag sind.


import org.hamcrest.BaseMatcher;
import org.hamcrest.Description;
import org.hamcrest.Matcher;

...

jimlindstrom

# Inputs
feature_names <- c("Feature 5", "Feature 4", "Feature 3", "Feature 2", "Feature 1")
num_features <- length(feature_names)
y <- array(c(10,4,1,0, 3,4,2,0, 1,2,8,1, 0,0,5,1,  1,2,5,3), dim=c(4,num_features))

# Calculate plot
num_neg_ratings <- 0
num_pos_ratings <- 0
for(i in 1:num_features) {
  num_neg_ratings = max(num_neg_ratings, sum(y[1:2,i]), sum(y[3:4,i]))