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How do I make JavaScript beep?
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I get TypeError: sound.Play is not a function (in Firefox).
– ashleedawg
Feb 18 '19 at 12:51
3
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Most efficient way to concatenate strings?
...o" + var1 + "bar" + var2 + "hello" + var3 + "world", the compiler automatically turns that into a string.concat call, which is as efficient as it gets. This answer is incorrect, there are plenty of better answers to choose from
– csauve
Jan 12 '11 at 17:56
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const char * const versus const char *?
...lf however is not const.
Example.
const char *p = "Nawaz";
p[2] = 'S'; //error, changing the const data!
p="Sarfaraz"; //okay, changing the non-const pointer.
const char * const p = "Nawaz";
p[2] = 'S'; //error, changing the const data!
p="Sarfaraz"; //error, changing the const pointer.
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Is it expensive to use try-catch blocks even if an exception is never thrown?
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try has almost no expense at all. Instead of doing the work of setting up the try at runtime, the code's metadata is structured at compile time such that when an exception is thrown, it now does a relatively expensive operation of walking up the stack an...
How to read if a checkbox is checked in PHP?
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this is the really good form to do this in pure simple php. but have to note that the value of a checkbox is string on when it is activated an a inexisting value if it is checked.
– Elvis Technologies
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Pass array to mvc Action via AJAX
...pplication/json; charset=utf-8',
success: function (data) {
},
error: function (x, y, z) {
}
});
// Action Method
public void MyAction(List<int> data)
{
// do stuff here
}
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Trouble comparing time with RSpec
...olution. I think it's easier and more reliable to just create the date manually:
it "updates updated_at attribute" do
freezed_time = Time.utc(2015, 1, 1, 12, 0, 0) #Put here any time you want
Timecop.freeze(freezed_time) do
patch :update
@article.reload
expect(@article.updated_at).t...
Pure virtual function with implementation
...{}
class Derived : public Base {};
int main() {
// Base b; -- compile error
Derived d;
}
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Find object in list that has attribute equal to some value (that meets any condition)
...eat solution, but how do i modify your line so that I can make x.value actually mean x.fieldMemberName where that name is stored in value? field = "name" next((x for x in test_list if x.field == value), None) so that in this case, i am actually checking against x.name, not x.field
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Prevent onmouseout when hovering child element of the parent absolute div WITHOUT jQuery
...hen I paste the above function into my script, Dreamweaver and FF throw an error on the first line, "function onMouseOut(this, event) {". It looks like you're not allowed to put "this" as a parameter. I guess it kind of works when I leave out "this" from the input params, but I don't know for sure, ...