Tutorial by Topics: o

ParameterDetailscharacter_expressionthe existing string in your datastart_positionthe position in character_expression to delete length and then insert the replacement_stringlengththe number of characters to delete from character_expressionreplacement_stringthe sequence of characters to insert in c...

The source code for Reachability.h and Reachability.m can be found on Apple's developer documentation site. Caveats Unlike other platforms, Apple is yet to provide a standard set of APIs to determine an iOS device's network status and offer only these code examples linked above. The source fil...

Subroutines get their arguments to magic variable called @_. While it doesn't have to be unpacked, it's recommended, as it helps readability, and prevents accidental changes as arguments of @_ are passed by reference (can be modified).

While many scripts, icons, and stylesheets can be written straight into HTML markup, it is best practice and more efficient to include these resources in their own file and link them to your document. This topic covers linking external resources such as stylesheets and scripts into an HTML document....

#See https://golang.org/pkg/text/template/ for Go Template Action and Function syntax expression = alert status {{.Last.Status}} and a variable {{.Eval .Alert.Vars.q | printf "%.2f"}} expression = `Use backticks to span multiple lines with line breaks in the Bosun config file` templ...

Scollector is a monitoring agent that can be used to send metrics to Bosun or any system that accepts OpenTSDB style metrics. It is modelled after OpenTSDB's tcollector data collection framework but is written in Go and compiled into a single binary. One of the design goals is to auto-detect servi...

Scollector supports tcollector style external collectors that can be used to send metrics to Bosun via custom scripts or executables. External collectors are a great way to get started collecting data, but when possible it is recommended for applications to send data directly to Bosun or to update...

Scollector can be used to monitor processes and services in Windows and Linux. Some processes like IIS application pools are monitored automatically, but usually you need to specify which processes and services you want to monitor.

<select name=""></select> <datalist id=""></datalist> <optgroup label="Option Group"></optgroup> <option value="">Option</option>

AttributeDescriptionGlobalAttributes that are available to any HTML5 element. For comprehensive documentation of these attributes see: MDN Global AttributesnameA string representing the name of an output. As a form element, output can be referenced by it's name using the document.forms property. Th...

NSLog(@"text to log"); // Basic text log NSLog(@"data: %f - %.2f", myFloat, anotherFloat); // Logging text including float numbers. NSLog(@"data: %i", myInteger); // Logging text including integer number. NSLog(@"data: %@", myStringOrObject); // Logging...

There are also several other FOR XML modes: FOR XML RAW - Creates one <row> element per row. FOR XML AUTO - Attempts to heuristically autogenerate a hierarchy. FOR XML EXPLICIT - Provides more control over the shape of the XML, but is more cumbersome than FOR XML PATH.

WebSocket is protocol, which enables two-way communication between a client and server: The goal WebSocket is to provide a mechanism for browser-based applications that need two-way communication with servers that does not rely on opening multiple HTTP connections. (RFC 6455) WebSocket works ove...

\C (any one character except newline) 'all literal except single quotes'; 'this: '\'' is a single quote' $'only \\ and \' are special; \n = newline etc.' "$variable and other text; \"\\\$\` are special"

Bitwise operations alter binary strings at the bit level. These operations are incredibly basic and are directly supported by the processor. These few operations are necessary in working with device drivers, low-level graphics, cryptography, and network communications. This section provides useful k...

[[ -OP $filename ]] [[ $file1 -OP $file2 ]] [[ -z $string ]] [[ -n $string ]] [[ "$string1" == "$string2" ]] [[ "$string1" == $pattern ]] The [[ … ]] syntax surrounds bash built-in conditional expressions. Note that spaces are required on either side of th...