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Why should the “PIMPL” idiom be used? [duplicate]
...ch you implement the body to provide the advertised functionality. You are free to change the implementation as you see fit, provided that you do not change the semantics of the API that you have advertised.
– Rob Wells
Dec 5 '14 at 16:50
...
rbenv not changing ruby version
..."' >> ~/.bash_profile
There are other ways to modify the path, feel free to substitute any of them instead of running the rbenv init.
NOTE: reinstall Rails with:
$ gem install rails
If you were trying to run Ruby on Rails, then you need to have this all working first, then install the rails ...
Populating Spring @Value during Unit Test
... I'm not sure because Config is static class. But please feel free to check
– Dmytro Boichenko
May 11 '18 at 15:48
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LINQ equivalent of foreach for IEnumerable
... I believe the idea is that the LINQ query operators should be side-effect-free, fitting in with a reasonably functional way of looking at the world. Clearly ForEach is exactly the opposite - a purely side-effect-based construct.
That's not to say this is a bad thing to do - just thinking about the...
pandas: multiple conditions while indexing data frame - unexpected behavior
...ethods which control their behaviour. (In query strings, of course, we're free to apply any parsing we like.)
– DSM
Jan 31 '17 at 3:02
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Set a default parameter value for a JavaScript function
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@SiPlus and you got extra reference errors for free of charge while trying to use undefined objects :p Even while it may work with some browsers and might be faster, null is still an object and undefined is reference to primitive type that is trying to tell that there is ...
What is Python buffer type for?
..., so yes s[6:11] will be a copy. If you set t = s[6:11] and then del s, it frees the memory that was taken by s, proving that t was copied. (To see this you need a bigger s and track Python's memory usage). It is however much more efficient just to make the copy if there isn't much data involved.
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“sending 'const NSString *' to parameter of type 'NSString *' discards qualifiers” warning
...arth NSString * const is a const pointer to NSString? What's their context free grammar generator?
– user4951
Sep 9 '12 at 8:38
4
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Placeholder in IE9
...der = function(textField){
//don't do anything if you get it for free..
if('placeholder' in document.createElement('input'))
return;
//don't do anything if the place holder attribute is not
//defined or is blank..
var placeHolder = textFiel...
How to get the insert ID in JDBC?
...B returned a generated key. Look, it's a ResultSet. The close() is just to free resources. Otherwise your DB will run out of them on long run and your application will break. You just have to write up some utility method yourself which does the closing task. See also this and this answer.
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