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What does an exclamation mark mean in the Swift language?
...d optionals should not be used when there is a possibility of a variable becoming nil at a later point. Always use a normal optional type if you need to check for a nil value during the lifetime of a variable.
Update 2:
The article "Interesting Swift Features" by Mike Ash gives some motivation fo...
Build an ASCII chart of the most commonly used words in a given text [closed]
Build an ASCII chart of the most commonly used words in a given text.
59 Answers
59
...
What's the best way to get the last element of an array without deleting it?
...s , count , end , reset)
The test inputs (<<input code>>s) to combine with:
null = $array = null;
empty = $array = [];
last_null = $array = ["a","b","c",null];
auto_idx = $array = ["a","b","c","d"];
shuffle = $array = []; $array[1] = "a"; $array[2] = "b"; $array[0] = "c";
100 = $arra...
How to find out client ID of component for ajax update/render? Cannot find component with expression
...t;p:layout> . Here is the inner part of the code (starting from p:tab component); the outer part is trivial.
5 Answers...
SHA1 vs md5 vs SHA256: which to use for a PHP login?
...PHP 5.5+
PHP 5.5 offers new functions for password hashing. This is the recommend approach for password storage in modern web applications.
// Creating a hash
$hash = password_hash($password, PASSWORD_DEFAULT, ['cost' => 12]);
// If you omit the ['cost' => 12] part, it will default to 10
//...
Interfaces — What's the point?
...nd probably just shrugs and says »Meh.« if it doesn't. Not so in C#. The compiler is responsible for making the correct calls and if it just has some random object the compiler doesn't know yet whether the instance during runtime will have that method. From the compiler's point of view it's invali...
What does 'COLLATE SQL_Latin1_General_CP1_CI_AS' do?
...
It sets how the database server sorts (compares pieces of text). in this case:
SQL_Latin1_General_CP1_CI_AS
breaks up into interesting parts:
latin1 makes the server treat strings using charset latin 1, basically ascii
CP1 stands for Code Page 1252
CI case in...
Saving an Object (Data persistence)
...e's an elementary application of it to your example:
import pickle
class Company(object):
def __init__(self, name, value):
self.name = name
self.value = value
with open('company_data.pkl', 'wb') as output:
company1 = Company('banana', 40)
pickle.dump(company1, output, ...
What is the difference between a strongly typed language and a statically typed language?
...nguage?
A statically typed language has a type system that is checked at compile time by the implementation (a compiler or interpreter). The type check rejects some programs, and programs that pass the check usually come with some guarantees; for example, the compiler guarantees not to use intege...
Are there good reasons not to use an ORM? [closed]
...an ORM make things harder to debug? You'll get the same result whether it comes from a stored proc or from the ORM.
I guess the only real detriment that I can think of with an ORM is that the security model is a little less flexible.
EDIT: I just re-read your question and it looks they are copy a...