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Elegant ways to support equivalence (“equality”) in Python classes
...ses, it always calls the method of the subclass operand, regardless of the order of the operands.
So here, if Number is a classic-style class:
n1 == n3 calls n1.__eq__;
n3 == n1 calls n3.__eq__;
n1 != n3 calls n1.__ne__;
n3 != n1 calls n3.__ne__.
And if Number is a new-style class:
both n1 =...
Go > operators
...y Arithmetic operators and its the same in other languages here is a basic PHP , C , Go Example
GO
package main
import (
"fmt"
)
func main() {
var t , i uint
t , i = 1 , 1
for i = 1 ; i < 10 ; i++ {
fmt.Printf("%d << %d = %d \n", t , i , t<<i)
}
...
How can I check if a string represents an int, without using try/except?
...o only use it for error trapping and reporting.
I was going to gripe that PHP, perl, ruby, C, and even the freaking shell have simple functions for testing a string for integer-hood, but due diligence in verifying those assumptions tripped me up! Apparently this lack is a common sickness.
Here'...
Cross-Domain Cookies
...T");
header("Access-Control-Allow-Headers: Content-Type, *");
Within the PHP-file you can use $_COOKIE[name]
Second, on the client side:
Within your ajax request you need to include 2 parameters
crossDomain: true
xhrFields: { withCredentials: true }
Example:
type: "get",
url: link,
crossDom...
Why does the C preprocessor interpret the word “linux” as the constant “1”?
...IT__ 8
#define __UINT8_MAX__ 255
#define __WINT_MAX__ 2147483647
#define __ORDER_LITTLE_ENDIAN__ 1234
#define __SIZE_MAX__ 18446744073709551615UL
#define __WCHAR_MAX__ 2147483647
#define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 1
#define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 1
#define __GCC_HAVE_SYNC_COMPARE...
MVC (Laravel) where to add logic
...er of Services in app folder, do you have to include it in bootstrap/start.php or anywhere for booting because i looked over your git couldnt find it? @RubensMariuzzo. Does it automatically become available thorughout the app ? so we can just use CongregationService::getCongregations(); ??
...
How to sort a list of objects based on an attribute of the objects?
...ble, a property of the class rather than incorporated in each instance the ordering is required.
This ensures consistency and removes the need for boilerplate code.
At a minimum, you should specify __eq__ and __lt__ operations for this to work. Then just use sorted(list_of_objects).
class Card(o...
Default argument values in JavaScript functions [duplicate]
...possible to assign a param the falsy value passed as the argument.
So, in order to handle only undefined values explicitly, the preferred approach would be,
function C(a, b) {
a = typeof a === 'undefined' ? DEFAULT_VALUE_A : a;
b = typeof b === 'undefined' ? DEFAULT_VALUE_B : b;
}
...
Windows batch: echo without new line
...ding = causes a syntax error.
See http://www.dostips.com/forum/viewtopic.php?f=3&t=4209 for more information.
jeb posted a clever solution that solves most of the problems at Output text without linefeed, even with leading space or = I've refined the method so that it can safely print absolut...
LAST_INSERT_ID() MySQL
...tely following the insert:
$result = $conn->query("SELECT * FROM corex ORDER BY id DESC LIMIT 1");
while ($row = $result->fetch_assoc()) {
$id = $row['id'];
}
This retrieves the last id from the database.
...