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Why is a round-trip conversion via a string not safe for a double?
...7 digits.
Proof: run the following 64-bit code (most of which I extracted from the Microsoft Shared Source CLI 2.0) in your debugger and examine v at the end of main:
#include <stdlib.h>
#include <string.h>
#include <math.h>
#define min(a, b) (((a) < (b)) ? (a) : (b))
struct...
str.startswith with a list of strings to test for
...or:
if link.lower().startswith(("js", "catalog", "script", "katalog")):
From the docs:
str.startswith(prefix[, start[, end]])
Return True if string starts with the prefix, otherwise return False. prefix can also be a tuple of prefixes to look for.
Below is a demonstration:
>>&g...
Case objects vs Enumerations in Scala
...g difference is that Enumerations come with support for instantiating them from some name String. For example:
object Currency extends Enumeration {
val GBP = Value("GBP")
val EUR = Value("EUR") //etc.
}
Then you can do:
val ccy = Currency.withName("EUR")
This is useful when wishing to pers...
How to use the “number_to_currency” helper method in the model rather than view?
...ed it for you. This is still not great, as you shouldn’t access a helper from a model.
Violate MVC & SRP. See fguillen’s answer for how to do this. I won’t echo it here because I don’t agree with it. Even more so, though, do I disagree with polluting your model with presentation methods ...
Benefits of inline functions in C++?
...vial functions). As such, it could provoke paging and defeat optimizations from the compiler.
It slightly breaks your encapsulation because it exposes the internal of your object processing (but then, every "private" member would, too). This means you must not use inlining in a PImpl pattern.
It sli...
Initialize class fields in constructor or at declaration?
...
Really? I swear I grabbed this info from Richter's CLR via C# (2nd edition I think) and the gist of it was that this was syntactic sugar (I may have read it wrong?) and the CLR just jammed the variables into the constructor. But you're stating that this isn't t...
How can I load storyboard programmatically from class?
...ton on the new view, and there is now a memory leak with that discarded vc from the prior incantations of this code.
– SWoo
Feb 6 '14 at 19:48
11
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show all tags in git log
...t a corner case, but quite instructive about tags in general, and it comes from another SO contributor Jakub Narębski):
Please note that the name of tag (heavyweight tag, i.e. tag object)
is stored in two places:
in the tag object itself as a contents of 'tag' header (you can see it...
Behaviour of final static method
... be redirected to the one in B.
The keyword final will disable the method from being hidden. So they cannot be hidden and an attempt to do so will result in a compiler error.
Hope this helps.
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How do I ignore the authenticity token for specific actions in Rails?
...n
For previous versions:
For individual actions, you can do:
protect_from_forgery :only => [:update, :destroy, :create]
#or
protect_from_forgery :except => [:update, :destroy, :create]
For an entire controller, you can do:
skip_before_action :verify_authenticity_token
...