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Articles by Nizamuddin Siddiqui
Page 159 of 196
How to generate passwords with varying lengths in R?
To generate passwords, we can use stri_rand_strings function of stringi package. If we want to have passwords of varying length then we need to create the passwords using the particular size separately. For example, for a size or length of the password equals to 8, we can use the argument length in the stri_rand_strings function.Loading stringi package:> library(stringi)Example1> stri_rand_strings(n=5, length=8, pattern="[0-9a-zA-Z]") [1] "YkIEDYQz" "t42JCzYO" "rOE9YN8U" "2lu9AonY" "6lDUxScX"Example2> stri_rand_strings(n=20, length=8, pattern="[0-9a-zA-Z]") [1] "glH3ysoX" "X0Sgvg3F" "P3YOePTa" "45GOb2hA" "tLCwszus" "CerCi1ks" [7] "UtFwzrSc" "pG8AJCQX" "NTCdMRHj" "5thI1wKb" "Ic8Rol1Y" "JakWa1Wd" [13] "9AfeXo7T" "SFJVn9XV" "lIRhLbJ9" "DNFyAbkJ" "jV4jJRZk" "IthkzfEU" [19] "talj9nBq" "Nak9Tidh"Example3> ...
Read MoreHow to use String Format to show decimal up to 2 places or simple integer in C#?
Converts the value of objects to strings based on the formats specified and inserts them into another string.Namespace:System Assembly:System.Runtime.dllEach overload of the Format method uses the composite formatting feature to include zero-based indexed placeholders, called format items, in a composite format string. At run time, each format item is replaced with the string representation of the corresponding argument in a parameter list. If the value of the argument is null, the format item is replaced with String.Empty.Exampleclass Program{ static void Main(string[] args){ int number = 123; var s = string.Format("{0:0.00}", number); ...
Read MoreHow to convert string to title case in C#?
Title case is any text, such as in a title or heading, where the first letter of major words is capitalized. Title case or headline case is a style of capitalization used for rendering the titles of published works or works of art in English.When using title case, all words are capitalized except for "minor" words unless they are the first or last word of the title.The current implementation of the ToTitleCase in the example yields an output string that is the same length as the input string.Example 1class Program{ static void Main(string[] args){ string myString ...
Read MoreHow to set a property value by reflection in C#?
The System. Reflection namespace contains classes that allow you to obtain information about the application and to dynamically add types, values, and objects to the application.Reflection objects are used for obtaining type information at runtime. The classes that give access to the metadata of a running program are in the System. Reflection namespace.Reflection allows view attribute information at runtime.Reflection allows examining various types in an assembly and instantiate these types.Reflection allows late binding to methods and properties.Reflection allows creating new types at runtime and then performs some tasks using those types.ExampleGetProperty(String)Searches for the public property with the specified name.GetType(String, Boolean)Gets ...
Read MoreHow to rethrow InnerException without losing stack trace in C#?
In c#, the throw is a keyword and it is useful to throw an exception manually during the execution of the program and we can handle those thrown exceptions using try−catch blocks based on our requirements.By using throw keyword in the catch block, we can re-throw an exception that is handled in the catch block. The re-throwing an exception is useful when we want to pass an exception to the caller to handle it in a way they want.Following is the example of re−throwing an exception to the caller using throw keyword with try-catch blocks in c#.Exampleclass Program{ static ...
Read MoreHow to use “not in” query with C# LINQ?
Except operator are designed to allow you to query data which supports the IEnumerable
Read MoreHow to Deserializing JSON to .NET object using Newtonsoft json in C# and pick only one value from the array?
The WebClient class provides common methods for sending data to or receiving data from any local, intranet, or Internet resource identified by a URI.The WebClient class uses the WebRequest class to provide access to resources. WebClient instances can access data with any WebRequest descendant registered with the WebRequest.RegisterPrefix method.DownloadString Downloads a String from a resource and returns a String.If your request requires an optional header, you must add the header to the Headers collectionExampleIn the below example we are calling the url "https://jsonplaceholder.typicode.com/posts"The example is then deserialized to User arrayFrom the user array we are printing the first array valueExampleclass ...
Read MoreHow do I overload the [] operator in C#?
The [] operator is called an indexer.An indexer allows an object to be indexed such as an array. When you define an indexer for a class, this class behaves similar to a virtual array. You can then access the instance of this class using the array access operator ([ ]).Indexers can be overloaded. Indexers can also be declared with multiple parameters and each parameter may be a different type. It is not necessary that the indexes have to be integers.Example 1static void Main(string[] args){ IndexerClass Team = new IndexerClass(); Team[0] = "A"; Team[1] = "B"; Team[2] ...
Read MoreHow to check whether you are connected to Internet or not in C#?
There are many ways to check whether internet is connected to a machine in C# or not. Make use of System.Net namespace which provides common methods for sending data to and receiving data from a resource identified by a URI. The WebClient or HttpClient class provides common methods for sending data to or receiving data from any local, intranet, or Internet resource identified by a URI. Here in the below example we have used (OpenRead)Returns the data from a resource as a Stream.Checks by hitting the url "http://google.com/generate_204" if success return true else false.The below example runs in the loop ...
Read MoreHow to apply manually created x-axis labels in a histogram created by hist function in R?
When we generate a histogram in R using hist function, the x-axis labels are automatically generated but we might want to change them to values defined by researchers or by any other authority. Therefore, firstly we need to create the histogram by ignoring the labels and then axis function can be used for new values.Consider the below vector x and create a histogram of x by ignoring x-axis labels −Exampleset.seed(1999) x
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