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Select first 4 rows of a data.frame in R
...we have the following dataset with 15 rows
>data <- data <- read.csv("./data.csv", sep = ";", header=TRUE)
>data
LungCap Age Height Smoke Gender Caesarean
1 6.475 6 62.1 no male no
2 10.125 18 74.7 yes female no
3 9.550 16 69.7 no female ...
Run a string as a command within a Bash script
...lude server::team_l_start = ${teamAComm} server::team_r_start=${teamBComm} CSVSaver::save='true' CSVSaver::filename = 'out.csv'
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Generate table relationship diagram from existing schema (SQL Server) [closed]
Is there a way to produce a diagram showing existing tables and their relationships given a connection to a database?
9 Ans...
What causes java.lang.IncompatibleClassChangeError?
...a-based APIs 2: Achieving API Binary Compatibility" written by Jim des Rivières.
There are also some automatic tools to detect such changes:
japi-compliance-checker
clirr
japitools
sigtest
japi-checker
Usage of japi-compliance-checker for your library:
japi-compliance-checker OLD.jar NEW.jar
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Html helper for
... ViewModel
{
[Required, Microsoft.Web.Mvc.FileExtensions(Extensions = "csv",
ErrorMessage = "Specify a CSV file. (Comma-separated values)")]
public HttpPostedFileBase File { get; set; }
}
HTML View:
@using (Html.BeginForm("Action", "Controller", FormMethod.Post, new
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Remove duplicate lines without sorting [duplicate]
...
To remove duplicate from 2 files :
awk '!a[$0]++' file1.csv file2.csv
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node.js remove file
...on, fs.exists now deprecated.
For example:-
fs.stat('./server/upload/my.csv', function (err, stats) {
console.log(stats);//here we got all information of file in stats variable
if (err) {
return console.error(err);
}
fs.unlink('./server/upload/my.csv',function(err){
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Replace comma with newline in sed on MacOS?
... Replacing a comma with a semicolon also works: tr ',' ';' < input.csv > output.csv
– Wim Deblauwe
Feb 24 '16 at 9:29
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Go to Matching Brace in Visual Studio?
Is there a way in Visual Studio 2008 to go from a closing brace to its opening brace? I've found a fair amount of stuff about highlighting the brace, but nothing about moving the cursor to it.
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How can I do string interpolation in JavaScript?
...interact with them, such as "e". If I try to write "ello" with them, I get èllo``. It is also somewhat annoyingly located (shift+forwardtick, which is another such special lookahead character), as it requires shift to type, unlike '.
– felix
Jun 14 '19 at 8:20...