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What are some uses of decltype(auto)?
...lay the return type deduction after the dust of template instantiation has settled.
Other uses
You can also use decltype(auto) in other contexts, e.g. the draft Standard N3936 also states
7.1.6.4 auto specifier [dcl.spec.auto]
1 The auto and decltype(auto) type-specifiers designate a placeh...
How do I pass the this context to a function?
...
Javascripts .call() and .apply() methods allow you to set the context for a function.
var myfunc = function(){
alert(this.name);
};
var obj_a = {
name: "FOO"
};
var obj_b = {
name: "BAR!!"
};
Now you can call:
myfunc.call(obj_a);
Which would alert FOO. The ...
HTTP header line break style
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Tricks to manage the available memory in an R session
...kage. With its := operator you can :
Add columns by reference
Modify subsets of existing columns by reference, and by group by reference
Delete columns by reference
None of these operations copy the (potentially large) data.table at all, not even once.
Aggregation is also particularly fast be...
What are valid values for the id attribute in HTML?
...ed } in your CSS (upper-case 'F'), that buggy browser would have failed to set the element's color to red. At the time of this edit, April 2015, I hope you aren't being asked to support Netscape 6. Consider this a historical footnote.
...
Default initialization of std::array?
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Ruby, remove last N characters from a string?
What is the preferred way of removing the last n characters from a string?
13 Answers
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How do I add a placeholder on a CharField in Django?
...o solutions) you have the option to specify a custom widget for a field by setting the widgets attribute of the inner Meta class.
class CommentForm(forms.ModelForm):
class Meta:
model = Comment
widgets = {
'body': forms.Textarea(attrs={'cols': 80, 'rows': 20})
...
How to send only one UDP packet with netcat?
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\r\n, \r and \n what is the difference between them? [duplicate]
I need to ask about the difference in a string between \r\n , \r and \n . How is a string affected by each?
4 Answers
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