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Taken from jQuery.ajax API web site: $.ajax({ method: "POST", url: "some.php", data: { name: "John", location: "Boston" }, success: function(msg) { alert("Data Saved: " + msg); }, error: ...

NumPy is available in the default repositories of most popular Linux distributions and can be installed in the same way that packages in a Linux distribution are usually installed. Some Linux distributions have different NumPy packages for Python 2.x and Python 3.x. In Ubuntu and Debian, install nu...

To get Unix Epoch Time, use the constant timeIntervalSince1970: Swift let date = NSDate() // current date let unixtime = date.timeIntervalSince1970 Objective-C NSDate *date = [NSDate date]; // current date int unixtime = [date timeIntervalSince1970];

import pandas as pd import numpy as np Using from_tuples: np.random.seed(0) tuples = list(zip(*[['bar', 'bar', 'baz', 'baz', 'foo', 'foo', 'qux', 'qux'], ['one', 'two', 'one', 'two', 'one', 'two', 'one', 'two']])) idx = pd...

Let's say we want to replace only numbers with 2 digits: regular expression will find them with (\d\d) SELECT REGEXP_REPLACE ('2, 5, and 10 are numbers in this example', '(\d\d)', '#') FROM dual; Results in: '2, 5, and # are numbers in this example' If I want to swap parts of the text, I us...

In the simple example, we simply set the width of the rectangle to that of it's parent. Let's consider a more complicated example: ApplicationWindow { visible: true width: 400 height: 640 Rectangle{ id: rect anchors.centerIn: parent height: 100 ...

Sample Data: CREATE TABLE table_name ( id, list ) AS SELECT 1, 'a,b,c,d' FROM DUAL UNION ALL -- Multiple items in the list SELECT 2, 'e' FROM DUAL UNION ALL -- Single item in the list SELECT 3, NULL FROM DUAL UNION ALL -- NULL list SELECT 4, 'f,,g' FROM DUAL; -- NULL item...

Often people try to index some content and then find it. If they cannot see the expected result, they try to troubleshoot the whole end-to-end process. The better way is to see whether the content actually indexed in the expected fields. This way it splits the problem into two: indexing and searchin...

Common table expressions support extracting portions of larger queries. For example: WITH sales AS ( SELECT orders.ordered_at, orders.user_id, SUM(orders.amount) AS total FROM orders GROUP BY orders.ordered_at, orders.user_id ) SELECT sales.ordered_at, sales.total,...

Jasmine can spy on an existing function using the spyOn function. let calculator = { multiply: function(a, b) { return a * b; }, square: function(a) { return this.multiply(a, a); } } describe('calculator', function() { it('squares numbers by multiplying them by the...

If you're ever dealing with C Binary API's from Perl Code, via the syscall, ioctl, or fcntl functions, you need to know how to construct memory in a C Compatible way. For instance, if you were ever dealing with some function that expected a timespec, you'd look into /usr/include/time.h and find: s...

A minimal CMake project file that uses Qt5 can be: cmake_minimum_required(VERSION 2.8.11) project(myproject) find_package(Qt5 5.7.0 REQUIRED COMPONENTS Core ) set(CMAKE_AUTOMOC ON) add_executable(${PROJECT_NAME} main.cpp ) target_link_libraries(${PROJECT_NAME} Qt5::C...

If you use an index that is sorted the way you would retrieve it, the SELECT statement would not do additional sorting when in retrieval. CREATE INDEX ix_scoreboard_score ON scoreboard (score DESC); When you execute the query SELECT * FROM scoreboard ORDER BY score DESC; The database system ...

Occasionally you'd want to catch an exception and throw it from a different thread or method while preserving the original exception stack. This can be done with ExceptionDispatchInfo: using System.Runtime.ExceptionServices; void Main() { ExceptionDispatchInfo capturedException = null; ...

val emailRegex: Regex = "(.+)@(.+)\\.(.+)".r "[email protected]" match { case emailRegex(userName, domain, topDomain) => println(s"Hi $userName from $domain") case _ => println(s"This is not a valid email.") } In this example, the regex attem...

// *** Find movies except given ids *** NSPredicate *filterByNotInIds = [NSPredicate predicateWithFormat:@"NOT (self.id IN %@)",@[@"7CDF6D22-8D36-49C2-84FE-E31EECCECB79", @"7CDF6D22-8D36-49C2-84FE-E31EECCECB76"]]; NSLog(@"Filter movies except given Ids : %@"...

// *** Case Insensitive comparison with exact title match *** NSPredicate *filterByNameCIS = [NSPredicate predicateWithFormat:@"self.title LIKE[cd] %@",@"Tom and Jerry"]; NSLog(@"Filter By Name(CIS) : %@",[array filteredArrayUsingPredicate:filterByNameCIS]);

// *** Case sensitive with exact title match *** NSPredicate *filterByNameCS = [NSPredicate predicateWithFormat:@"self.title = %@",@"Tom and Jerry"]; NSLog(@"Filter By Name(CS) : %@",[array filteredArrayUsingPredicate:filterByNameCS]);

It is usually not a good idea to mix signed and unsigned integers in arithmetic operations. For example, what will be output of following example? #include <stdio.h> int main(void) { unsigned int a = 1000; signed int b = -1; if (a > b) puts("a is more than b&quot...

A common usage scenario that this feature really helps with is when you are looking for an object in a collection and need to create a new one if it does not already exist. IEnumerable<MyClass> myList = GetMyList(); var item = myList.SingleOrDefault(x => x.Id == 2) ?? new MyClass { Id = 2...