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What's invokedynamic and how do I use it?
...ng toString();
descriptor: ()Ljava/lang/String;
flags: (0x0001) ACC_PUBLIC
Code:
stack=1, locals=1, args_size=1
0: aload_0
1: invokedynamic #18, 0 // InvokeDynamic #0:toString:(LRange;)Ljava/lang/String;
6: areturn
In its Bootstrap Method Table:
Boots...
What is pseudopolynomial time? How does it differ from polynomial time?
...ssuming we were using a standard binary representation, where we'd need log_2 n bits to represent the number. You're right that changing the underlying representation will change the runtime as a function of the size of the input, though.
– templatetypedef
Jul ...
Make git automatically remove trailing whitespace before committing
...ove trailing" feature", but a "warning" feature like:
if (/\s$/) {
bad_line("trailing whitespace", $_);
}
You could however build a better pre-commit hook, especially when you consider that:
Committing in Git with only some changes added to the staging area still results in an “atomic...
OPTION (RECOMPILE) is Always Faster; Why?
...lding your statistics. This can be done by running the following:
EXEC sp_updatestats
And then recreating your execution plan. This will ensure that when your execution plan is created it will be using the latest information.
Adding OPTION(RECOMPILE) rebuilds the execution plan every time that...
How expensive is RTTI?
...ime if you can afford to do
if (typeid(a) == typeid(b)) {
B* ba = static_cast<B*>(&a);
etc;
}
instead of
B* ba = dynamic_cast<B*>(&a);
if (ba) {
etc;
}
The former involves only one comparison of std::type_info; the latter necessarily involves traversing an inheritanc...
How do I make a Git commit in the past?
...
The advice you were given is flawed. Unconditionally setting GIT_AUTHOR_DATE in an --env-filter would rewrite the date of every commit. Also, it would be unusual to use git commit inside --index-filter.
You are dealing with multiple, independent problems here.
Specifying Dates Other Tha...
How do I merge two dictionaries in a single expression in Python (taking union of dictionaries)?
...z = {**x, **y}
In Python 2, (or 3.4 or lower) write a function:
def merge_two_dicts(x, y):
z = x.copy() # start with x's keys and values
z.update(y) # modifies z with y's keys and values & returns None
return z
and now:
z = merge_two_dicts(x, y)
In Python 3.9.0a4 or greater...
Why doesn't the height of a container element increase if it contains floated elements?
...nstead.
Also if you might like to self-clear an element you can use
.self_clear:after {
content: "";
clear: both;
display: table;
}
How Does CSS Float Work?
What is float exactly and what does it do?
The float property is misunderstood by most beginners. Well, what exactly does float ...
C++ templates Turing-complete?
...te<typename List, int N, typename = void>
struct GetItem {
static_assert(N > 0, "index cannot be negative");
static_assert(GetSize<List>::value > 0, "index too high");
typedef typename GetItem<typename List::tail, N-1>::type type;
};
template<typename List>...
How to create a self-signed certificate for a domain name for development?
...ive you a hard time when they stubbornly refuse to match your domain motör_head.dev.local to your wildcard pattern *.dev.local. They will comply when you switch to motoer-head.dev.local.
A wildcard in a certificate will only match ONE label (= section between two dots) in a domain, never more. *.de...