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let frame = CGRect(x: 0, y: 100, width: 320, height: 10) let slider = UISlider(frame: frame) slider.addTarget(self, action: #selector(sliderAction), for: .valueChanged) slider.backgroundColor = .clear slider.minimumValue = 0.0 slider.maximumValue = 50.0 //sending a NO/False would updat...

navigationController?.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName: UIColor.white, NSFontAttributeName:UIFont(name: "HelveticaNeue-CondensedBold", size: 17)!,] navigationController?.navigationBar.tintColor = .white navigationController?.navigationBar.barTintColor =...

If we have a c++ project that uses a config.h configuration file with some custom paths or variables, we can generate it using CMake and a generic file config.h.in. The config.h.in can be part of a git repository, while the generated file config.h will never be added, as it is generated from the cu...

If you have a cmake module . You can create a folder called in to store all config files. For example,you have a project called FOO, you can create a FOO_config.h.in file like: //=================================================================================== // CMake configuration file, base...

To indent our outdent the current line in normal mode press the greater than > key or the less than < twice accordingly. To do the same on multiple lines just add a number beforehand 6>> CommandDescription>>indent current line<<outdent current line6>>indent next 6 lin...

Detailed instructions on getting arcgis set up or installed.

Correlated (also known as Synchronized or Coordinated) Subqueries are nested queries that make references to the current row of their outer query: SELECT EmployeeId FROM Employee AS eOuter WHERE Salary > ( SELECT AVG(Salary) FROM Employee eInner WHERE eInner.Dep...

my @letters = ( 'a' .. 'z' ); # English ascii-bet print $letters[ rand @letters ] for 1 .. 5; # prints 5 letters at random How it works rand EXPR expects a scalar value, so @letters is evaluated in scalar context An array in scalar context returns the number of elements it ...

The series of events here is supposed to work as follows: Compile code with -pg option Link code with -pg option Run program Program generates gmon.out file Run gprof program To add profiling flags, you must add to your CMakeLists.txt: SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pg&quot...

// An 8-bit 'byte' value: byte aByte = (byte)0b00100001; // A 16-bit 'short' value: short aShort = (short)0b1010000101000101; // Some 32-bit 'int' values: int anInt1 = 0b10100001010001011010000101000101; int anInt2 = 0b101; int anInt3 = 0B101; // The B can be upper or lower case. // A ...

The following example shows other ways you can use the underscore in numeric literals: long creditCardNumber = 1234_5678_9012_3456L; long socialSecurityNumber = 999_99_9999L; float pi = 3.14_15F; long hexBytes = 0xFF_EC_DE_5E; long hexWords = 0xCAFE_BABE; long maxLong = 0x7fff_ffff_ffff_ffffL;...

Detailed instructions on getting caching set up or installed.

// Takes a callback and executes it with the read value def readFile(path: String)(callback: Try[String] => Unit): Unit = ??? readFile(path) { _.flatMap { file1 => readFile(path2) { _.foreach { file2 => processFiles(file1, file2) }} }} The function argument to readFile is...

We can have three cases to analyze an algorithm: Worst Case Average Case Best Case #include <stdio.h> // Linearly search x in arr[]. If x is present then return the index, // otherwise return -1 int search(int arr[], int n, int x) { int i; for (i=0; i<n; i...

Not everything in a bindings library will have the same name in C# as it does in Java. In C#, interface names start with "I", but Java has no such convention. When you import a Java library, an interface named SomeInterface will become ISomeInterface. Similarly, Java doesn't have propert...

For simple cases, you can filter data directly. a = np.random.normal(size=10) print(a) #[-1.19423121 1.10481873 0.26332982 -0.53300387 -0.04809928 1.77107775 # 1.16741359 0.17699948 -0.06342169 -1.74213078] b = a[a>0] print(b) #[ 1.10481873 0.26332982 1.77107775 1.16741359 0.176999...

The Null literal (written as null) represents the one and only value of the null type. Here are some examples MyClass object = null; MyClass[] objects = new MyClass[]{new MyClass(), null, new MyClass()}; myMethod(null); if (objects != null) { // Do something }...

A statement is usually a test on a variable or the return value of a function. To test those values, we can use some relational operators: OperatorMeaningExample==Equal to1 == 1 is TRUE, 1 == 2 is FALSE!=Not equal to1 != 2 is TRUE, 1 != 1 is FALSE<Less than1 < 2 is TRUE, 2 < 1 is FALSE>...

It is possible to ask a program to execute a specific section of code only if an if statement is considered false. For this, we use the else key word. if(statement) { // Code to execute if the statement is true. } else { // Code to execute if the statement is false. } Both code se...

A std::tuple<T...> can be used to pass multiple values around. For example, it could be used to store a sequence of parameters into some form of a queue. When processing such a tuple its elements need to be turned into function call arguments: #include <array> #include <iostream>...