Tutorial by Examples: ear

import sympy as sy x, y = sy.symbols("x y") # nsolve needs the (in this case: two) equations, the names of the variables # (x,y) we try to evaluate solutions for, and an initial guess (1,1) for the # solution print sy.nsolve((x**3+sy.exp(y)-4,x+3*y),(x,y),(1,1)) The result s...

myfunc(){ echo "I will never be executed." } another_func(){ # this "redeclare" overwrites original function myfunc(){ echo "I am the one and only"; } } # myfunc will print "I will never be executed" myfunc # but if we call another_func fi...

The JAR, WAR and EAR files types are fundamentally ZIP files with a "manifest" file and (for WAR and EAR files) a particular internal directory / file structure. The recommended way to create these files is to use a Java-specific build tool which "understands" the requirements f...

Problem statement: Find the minimum (over x, y) of the function f(x,y), subject to g(x,y)=0, where f(x,y) = 2 * x**2 + 3 * y**2 and g(x,y) = x**2 + y**2 - 4. Solution: We will solve this problem by performing the following steps: Specify the Lagrangian function for the problem Determine the K...

Oracle Learning Library gives you idea about how to use oracle apex in Real world.

1. Bagged Decision Trees Bagging performs best with algorithms that have high variance. A popular example are decision trees, often constructed without pruning. In the example below see an example of using the BaggingClassifier with the Classification and Regression Trees algorithm (DecisionTreeCl...

Pass an upper limit as an argument to the rand() function. Input: my $upper_limit = 100; my $random = rand($upper_limit); print $random . "\n"; Output: A random floating-point number, like... 45.8733038119139

Cast your random floating-point number as an int. Input: my $range = 10; # create random integer as low as 0 and as high as 9 my $random = int(rand($range)); # max value is up to but not equal to $range print $random . "\n"; Output: A random integer, like... 0 See also t...

Prerequisites Install pods in your project Install the GooglePlaces SDK Enable location services First we need to get the users location by getting their current longitude and latitude. Import GooglePlaces and GooglePlacePicker import GooglePlaces import GooglePlacePicker Add the...

With the below commands, user's default search_path can be set. Check search path before set default schema. postgres=# \c postgres user1 You are now connected to database "postgres" as user "user1". postgres=> show search_path; search_path ---------------- &q...

In many application it is necessary to compute the function of two or more arguments. Traditionally, we use for-loops. For example, if we need to calculate the f = exp(-x^2-y^2) (do not use this if you need fast simulations): % code1 x = -1.2:0.2:1.4; y = -2:0.25:3; for nx=1:lenght(x) for n...

It's easiest to show a binary search on numbers using pseudo-code int array[1000] = { sorted list of numbers }; int N = 100; // number of entries in search space; int high, low, mid; // our temporaries int x; // value to search for low = 0; high = N -1; while(low < high) { mid = (...

Go to the repository you want to clone (something like: https://github.com/username/repo) On the right, click on the green button named clone or download A small window will appear, copy the url (something like: https://github.com/username/repo.git) Open a terminal window on...

identification division. program-id. deleting. environment division. configuration section. input-output section. file-control. select optional indexed-file assign to "indexed-file.dat" status is indexing-status organization is ind...

// Default UINavigationBar appearance throughout the app [[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName: [UIColor whiteColor], NSFontAttributeName : [UIFont fontWithName:@"HelveticaNeue-CondensedBold...

keyword search cd /usr/ports make search key=apache name search cd /usr/ports make search name=apache24 Using fresports Official FreeBSD ports website (http://freshports.org/) give you a nice way to find ports and all information concerning it.

Regular expression support for tust is provided by the regex crate, add it to your Cargo.toml: [dependencies] regex = "0.1" The main interface of the regex crate is regex::Regex: extern crate regex; use regex::Regex; fn main() { //"r" stands for "raw" str...

Depth-first search is an algorithm for traversing or searching tree or graph data structures. One starts at the root and explores as far as possible along each branch before backtracking. A version of depth-first search was investigated in the 19th century French mathematician Charles Pierre Trémaux...

01 a PIC 9. 01 b PIC 99. 01 c PIC 999. 01 s PIC X(4). 01 record-group. 05 field-a PIC 9. 05 field-b PIC 99. 05 field-c PIC 999. 01 display-record. 05 field-a PIC Z. 05 field-b PIC ZZ. 05 field-c PIC $Z9. *> numeric fields are moved left to right *> a set to...

There are quite a number situations where one has huge amounts of data and using which he has to classify an object in to one of several known classes. Consider the following situations: Banking: When a bank receives a request from a customer for a bankcard, the bank has to decide whether to issue...