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How should one use std::optional?
...tional<int> try_parse_int(std::string s)
{
//try to parse an int from the given string,
//and return "nothing" if you fail
}
The same thing might be accomplished with a reference argument instead (as in the following signature), but using std::optional makes the signature and usage n...
Webview load html from assets directory
I'm trying to load a html page from the assets directory. I tried this, but it fails.
4 Answers
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Disable Logback in SpringBoot
....g log4j in your classpath. Why do you wish to exclude the default loggers from you application?
– F.O.O
Sep 16 '14 at 11:34
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Is there a “null coalescing” operator in JavaScript?
...are considered NOT NULL and therefore count as actual values. If you come from a .net background, this will be the most natural feeling solution.
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iOS: Multi-line UILabel in Auto Layout
...eke's answer about making sure subsequent views don't prohibit Auto Layout from resizing the (possibly) multiline view.
– Tom Howard
Sep 2 '14 at 15:18
1
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rails - Devise - Handling - devise_error_messages
...::Error
It also appears to be defined in a higher scope (probably coming from the controller), so it can be accessed in a variety of places.
Anywhere in your Helper
module DeviseHelper
def devise_error_messages1!
resource.errors.full_messages.map { |msg| content_tag(:li, msg) }.join
end
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Why do we use __init__ in Python classes?
... I will start referring to the object known as fido with yet another name. From now on, fido.colour is exactly the same variable as the_mangy_one.colour.
So, the things inside the __init__. You can think of them as noting things into the Dog's birth certificate. colour by itself is a random variabl...
What is the difference between task and thread?
...fference between Thread and Task . I did some sample program(help taken from MSDN) for my own sake of learning with
8 ...
Does Python's time.time() return the local or UTC timestamp?
...563265.81
>>> import datetime
>>> st = datetime.datetime.fromtimestamp(ts).strftime('%Y-%m-%d %H:%M:%S')
>>> print st
2012-12-15 01:21:05
>>>
The ts variable is the time returned in seconds. I then converted it to a string using the datetime library making it a...
Can you disable tabs in Bootstrap?
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You could remove the data-toggle="tab" attribute from the tab as it's hooked up using live/delegate events
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