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group_concat is used to concatenate non-null values in a group. The maximum length of the resulting string can be set using the group_concat_max_len option: SET [GLOBAL | SESSION] group_concat_max_len = val; Setting the GLOBAL variable will ensure a permanent change, whereas setting the SESSION ...

Detailed instructions on getting jax-rs set up or installed.

primary requirement is that java should be installed in your system.there is two option for setting the jersey in the Eclipse IDE is first manually download the jersey jars from this link.and the in the project->add external jars you can add these libraries there.[https://jersey.java.net/download...

void parallelAddition (unsigned N, const double *A, const double *B, double *C) { unsigned i; #pragma omp parallel for shared (A,B,C,N) private(i) schedule(static) for (i = 0; i < N; ++i) { C[i] = A[i] + B[i]; } } This example adds two vector (A and B into...

#include <omp.h> #include <stdio.h> int main (void) { int t = (0 == 0); // true value int f = (1 == 0); // false value #pragma omp parallel if (f) { printf ("FALSE: I am thread %d\n", omp_get_thread_num()); } #pragma omp parallel if (t) { printf (&quo...

Reading the content of an InputStream as a byte array: // Reading from a file try (InputStream in = new FileInputStream("in.dat")) { byte[] content = ByteStreams.toByteArray(in); // do something with content } Copying an InputStream to an OutputStream: // Copying the content f...

#include <omp.h> #include <unistd.h> #include <iostream> #include <list> static void processElement (unsigned n) { // Tell who am I. The #pragma omp critical ensures that // only one thread sends data to std::cout #pragma omp critical std::cout <...

Let's create a process which is rather long to complete : $ sleep 1000 To pause the process, type Ctrl + Z : ^Z [1]+ Stopped sleep 1000 You can use jobs to see the list of processes running or stopped in the current terminal : $ jobs [1]+ Stopped sleep 10...

Reading the content of a Reader as a String: // Reading from a file try (Reader reader = new FileReader("in.txt")) { String content = CharStreams.toString(reader); // do something with content } Reading the content of a Reader as a list of line contents: try (Reader reader = n...

With all the requests and assertions going back and forth, it can be cumbersome to debug issues with your SAML claims and assertions. As within SAML a core principle is not needing a direct connection between the IdP and the SP, the user's browser acts as a message carrier between the two. Because ...

When a new documentation tag is created, StackOverflow automatically generates an introductory topic, acting as a placeholder for the first actual topic. The introductory topic contains placeholder texts and pointers to point contributors in the right directions for helping expanding on the new doc...

Custom matchers can be added in jasmine using the syntax: jasmine.addMatchers([ toMatch: function () { return { compare: function (actual, expected) { return { pass: actual===expected, message: "Expected actual to match expected...

Protractor can selectively run groups of tests using fdescribe() instead of describe(). fdescribe('first group',()=>{ it('only this test will run',()=>{ //code that will run }); }); describe('second group',()=>{ it('this code will not run',()=>{ //code...

Protractor allows tests to be set as pending. This means that protractor will not execute the test, but will instead output: Pending: 1) Test Name Temporarily disabled with xit Or, if disabled with xdescribe(): Pending: 1) Test Name No reason given Combinations A xit() within an xdesc...

Time complexity is a property of Problems someone might want to solve computationally, Algorithms designed to solve such problems and Programs implementing such algorithms. An abstract concept requires no installation or setup. Simply take any problem, algorithm, or code and ask "How lo...

This uses the Dropbox Java SDK to download a file from the Dropbox API at the remote path /Homework/math/Prime_Numbers.txt to the local file Prime_Numbers.txt: String localPath = "Prime_Numbers.txt"; OutputStream outputStream = new FileOutputStream(localPath); FileMetadata metadata = cl...

Many real-world database tables have many rows with DATETIME OR TIMESTAMP column values spanning a lot of time, including years or even decades. Often it's necessary to use a WHERE clause to retrieve some subset of that timespan. For example, we might want to retrieve rows for the date 1-September-2...

Doubly Linked Lists are a type of linked list. A doubly linked list's nodes have two "pointers" to other nodes, "next" and "previous." It is called a double linked list because each node only has two "pointers" to other nodes. A doubly linked list may have a h...

There is a dozen implementations of Standard ML. MLton produces very optimized code, but has no REPL. SML/NJ is the most widely used, but has slightly difficult error messages for learning purposes. Moscow ML and Poly/ML are easy to get started with, but don't support the .mlb package format. That i...

Joins in Spark: Read textFile 1 val txt1=sc.textFile(path="/path/to/input/file1") Eg: A B 1 2 3 4 Read textFile 2 val txt2=sc.textFile(path="/path/to/input/file2") Eg: A C 1 5 3 6 Join and print the result. txt1.join(txt2).foreach(p...