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In this chapter we see what happens when we update the values in a tuple, which is actually immutable. We will be able to merge new values with old values but that throws an error. We can study the bytecode of the error and understand better how the rules for tuple work.First we define a tuple and then issue a command to update its last element as shown below.Example>>> tupl = (5, 7, 9, [1, 4]) >>> tupl[3] += [6, 8]OutputRunning the above code gives us the following result −Traceback (most recent call last): File "", line 1, in TypeError: ... Read More
In Statistical analysis study of data variability in a sample indicates how dispersed are the values in a given data sample. The two important ways we calculate the variability are Absolute Deviation and Mean Absolute Deviation.Absolute DeviationIn this method we first find the mean value of the given sample and then calculate the difference between each value and the mean value of the sample called as the absolute deviation value of each data sample. So for the values higher than mean the value the deviation value will be positive and for those lower than the mean value the deviation value ... Read More
In statistics, the term "frequency" indicates the number of occurrences of a value in a given data sample. As a software meant for mathematical and scientific analysis, Pandas has many in-built methods to calculate frequency from a given sample.Absolute Frequency It is same as just the frequency where the number of occurrences of a data element is calculated. In the below example, we simply count the number of times the name of a city is appearing in a given DataFrame and report it out as frequency.Approach 1 − We use the pandas method named .value_counts.Exampleimport pandas as pd # Create ... Read More
Use the flex-wrap property with nowrap value to avoid flex-items to wrap.ExampleYou can try to run the following code to implement the nowrap value −Live Demo .mycontainer { display: flex; background-color: orange; flex-wrap: nowrap; } .mycontainer > div { background-color: white; text-align: center; line-height: 40px; font-size: 25px; width: 100px; margin: 5px; } Quiz Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9
To add colored border, use the CSS border property.ExampleYou can try to run the following code to add a colored border.Live Demo .button { background-color: yellow; color: black; text-align: center; font-size: 15px; padding: 20px; border-radius: 15px; border: 3px dashed blue; } Result Click below for result: Result
Use the flex-wrap property with wrap value to wrap flex-items.ExampleYou can try to run the following code to implement the wrap value −Live Demo .mycontainer { display: flex; background-color: orange; flex-wrap: wrap; } .mycontainer > div { background-color: white; text-align: center; line-height: 40px; font-size: 25px; width: 100px; margin: 5px; } Quiz Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9
To set the button width, use the CSS width property.ExampleYou can try to run the following code to set the width of a button −Live Demo .btn { background-color: yellow; color: black; width: 120px; text-align: center; font-size: 15px; padding: 20px; border-radius: 15px; border: 3px dashed blue; } Result Click below for result: Result
The getCause() method is from Throwable class and we can use this method which returns the cause of the exception or returns null if the cause of the exception is not known. The getCause() method doesn’t accept any arguments and doesn’t throw an exception. It returns the cause that was provided by one of its constructors or that was determined by the formation of the initCause() method of Throwable class.Syntaxpublic Throwable getCause()Examplepublic class GetCauseMethodTest { public static void main(String[] args) throws Exception { try { myException(); } catch(Exception e) { System.out.println("Cause ... Read More
A Java Class is stored in the form of byte code in a .class file after it is compiled. The ClassLoader loads the class of the Java program into memory when it is required. The ClassLoader is hierarchical and so if there is a request to load a class, it is delegated to the parent class loader.The types of ClassLoader in Java are given as followsBootstrap ClassLoaderExtensions ClassLoaderSystem ClassLoaderExamplepublic class ClassLoaderTest { public static void main(String[] args) { System.out.println("class loader for this class: " + ClassLoaderTest.class.getClassLoader()); System.out.println("class loader for DNSNameService: " + sun.net.spi.nameservice.dns.DNSNameService.class.getClassLoader()); ... Read More
The object-fit property in CSS is used to resize image or video to fit its container. It has the following valuescontain: Content is scaled to fitcover: clipped to fitfill: fills the content box.ExampleYou can try to run the following code to implement object-fit property with the cover value.Live Demo .myimg { width:250px; height:350px; object-fit:fill; } SWIFT