Tutorial by Examples: c

The following code will attempt to execute loadFromHttp() up to 5 times (maxAttempts), with each attempt delayed by as many seconds. If maxAttempts is surpassed, the Observable gives up. // assume loadFromHttp() returns a Promise, which might fail. Rx.Observable.from(loadFromHttp()) ....

Dictionaries can be constructed by passing it any number of pairs. julia> Dict("A"=>1, "B"=>2) Dict{String,Int64} with 2 entries: "B" => 2 "A" => 1 You can get entries in a dictionary putting the key in square brackets. julia> dic...

Converting date and time strings to numeric arrays can be done with datenum, though it may take as much as half the time of reading a large data file. Consider the data in example Textscan. By, again, using textscan and interpret date and time as integers, they can rapidly be converted into a numer...

Windows AppBuilder In the Windows Appbuilder the Application Compiler is found in the Tools Menu. Procedure Editor (Linux - pro or Windows pro.exe In the Procedure Editor (both Linux and Windows) the Compiler if found in the Tools menu. Application Compiler Regardless of OS the function...

The compile statement lets you compile programs in Progress ABL: Basic usage: COMPILE hello-world.p SAVE. With a variable: DEFINE VARIABLE prog AS CHARACTER NO-UNDO. prog = "hello.p". COMPILE VALUE(prog) SAVE. There are several options to the COMPILE-statement: SAVE state...

Using async/await in C# applications simplifies multi-threading. This is how you can use async/await in conjunction with a TcpClient. // Declare Variables string host = "stackoverflow.com"; int port = 9999; int timeout = 5000; // Create TCP client and connect // Then get the netstr...

$ brew tap pivotal/tap $ brew install springboot

$ sudo port install spring-boot-cli

Button API provides an easy way to assign common keyboard shortcuts to buttons without the need to access accelerators' list assigned to Scene or explicitly listening to the key events. Namely, two convenience methods are provided: setDefaultButton and setCancelButton: Setting setDefaultButton ...

BigDecimal provides static properties for the numbers zero, one and ten. It's good practise to use these instead of using the actual numbers: BigDecimal.ZERO BigDecimal.ONE BigDecimal.TEN By using the static properties, you avoid an unnecessary instantiation, also you've got a literal in you...

The LineChart class presents the data as a series of data points connected with straight lines. Each data point is wrapped in XYChart.Data object, and the data points are grouped in XYChart.Series. Each XYChart.Data object has two fields, which can be accessed using getXValue and getYValue, that co...

/** * Save the results from the saved search as .csv and store in file cabinet * Get the file's internal id when loading the file * Use \n to process each row * Get the internal id and whatever columns that need updating * Create a filtered search and pass the internal id * If the passe...

If you have the following data file cat data.csv 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 maybe you need to read the fourth column of the third line, this would be "24" awk 'NR==3 ...

Sweave from the utils package allows for formatting code, prose, graphs and tables together in a LaTeX document. Further Resources Knitr and RMarkdown

Consider you have a Parent Frame(Frame-Parent). and 2 child frames(Frame_Son,Frame_Daughter). Lets see various conditions and how to handle. 1.From Parent to Son or Daughter: driver.switchTo().frame("Frame_Son"); driver.switchTo().frame("Frame_Daughter"); 2.From Son to Pa...

This example assumes two servers: dbserver (where our database lives) appclient (where our applications live) FWIW, both servers are SELinux enforcing. First, log on to dbserver Create a temporary directory for creating the certificates. mkdir /root/certs/mysql/ && cd /root/cer...

SASS supports two types of comments: Inline comments - These only span one line and are usually used to describe a variable or block. The syntax is as follows: // Your comment here (you prepend it with a double slash (//) and the rest of the line is ignored by the parser. Multiline comment...

SELECT DISTINCT object_name(i.object_id) AS [Object Name], c.name AS [Partition Column], s.name AS [Partition Scheme], pf.name AS [Partition Function], prv.tot AS [Partition Count], prv.miVal AS [Min Boundry Value], prv.maVal AS [Max Boundry Value] FROM sys.object...

<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html"> <title>JSP Comments</title> </head> <body> <%-- JSP comments --%> -- Ignored by container, you can't see this comment in source code...

Salt commands are executed using a common structure: salt '*' pkg.install vim [target] [module.function] [arguments] The target determines which systems apply the command. In the example above we target all ('*') the Salt minions. See the targeting minions documentation for more...