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Factory pattern in C#: How to ensure an object instance can only be created by a factory class?
...'s no point in having a private default constructor if you have declared a custom one. also, in this case there is literally nothing to be gained from using a static "constructor" instead of just doing the validation in the real constructor (since it's part of the class anyway). it's even WORSE, sin...
How can I ask the Selenium-WebDriver to wait for few seconds in Java?
...
I like to use custom conditions. Here's some code in Python:
def conditions(driver):
flag = True
ticker = driver.find_elements_by_id("textbox")
if not ticker:
flag = False
return flag
... click something to load ....
Array versus List: When to use which?
...
Why for network protocols? Wouldn't you rather use custom structures here and give them an special serializer or an explicit memory layout? Furthermore, what speaks against using a List<T> here rather than a byte array?
– Konrad Rudolph
...
Is it possible to use Swift's Enum in Obj-C?
... imported into Swift, whether they’re defined in system frameworks or in custom code.
Objective-C
typedef NS_ENUM(NSInteger, UITableViewCellStyle) {
UITableViewCellStyleDefault,
UITableViewCellStyleValue1,
UITableViewCellStyleValue2,
UITableViewCellStyleSubtitle
};
Swift
let cell...
What is the difference between MediaPlayer and VideoView in Android
...it a lot easier to implement videos in your app. If you aren't doing much custom work, VideoView is the way to go.
That said, you can also pass the RTSP link off to the system to use the most appropriate app for playing the video, which is even easier to do:
String url = "rtsp://yourrtsplink.com/...
Why can't I use an alias in a DELETE statement?
...ews to get a reduced set of rows. E.g. delete o from Order as o inner join Customer as c on c.CustomerID = o.CustomerID where c.ArchiveOrders = 1
– Andrew Jens
Aug 31 '17 at 2:03
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I need to store postal codes in a database. How big should the column be?
...ode it really doesnt matter. Slightly too big is better than annoying one customer because they cant input their details.
– Toby Allen
Nov 28 '08 at 7:42
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Dynamically change color to lighter or darker by percentage CSS (Javascript)
...he CSS file, but our site lets user decide what colors they want for their customized profile/site (like Twitter).
24 Answ...
Pass variables to Ruby script via command line
...cond_meet Have you met before?
# @option options [String] :prefix Your custom prefix
def say_hello(name, options = {})
second_meet = nil
second_meet = 'Nice to see you again!' if options['second_meet']
prefix = options['prefix']
message = @hello_msg + ', '
messa...
What is a clean, pythonic way to have multiple constructors in Python?
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if num_holes is None:
# Construct a gouda
else:
# custom cheese
# common initialization
For really complex cases with lots of different constructors, it might be cleaner to use different factory functions instead:
@classmethod
def create_gouda(cls):
c = Cheese()
...