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Private and Protected Members : C++
...he derived class writer could do to the hierarchy. Protected methods are already a potential problem. I am not convinced aggravating this by using protected state is the right approach.
– paercebal
Oct 11 '16 at 21:05
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Using reflect, how do you set the value of a struct field?
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thanks! now that I've read peterSO's notes, this makes perfect sense. I was using foo, not &foo, so could not be changed, and was unsure what Elem() was about.
– cc young
Jun 20 '11 at 6:56
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Javascript Functions and default parameters, not working in IE and Chrome
...t <= 5. ES6 has proposed Default parameters. So the above could instead read:
function setName(name = 'Bob') {}
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Batch file to delete files older than N days
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My thoughts were more along the lines: "My files are already where I want them. I don't want to have to move them." "Deleting files is logically what you're doing, so do that. Don't overload Robocopy to do it"
– adamb0mb
Nov 13 '13 at 0:20
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Why is “if not someobj:” better than “if someobj == None:” in Python?
...irst test, Python try to convert the object to a bool value if it is not already one. Roughly, we are asking the object : are you meaningful or not ? This is done using the following algorithm :
If the object has a __nonzero__ special method (as do numeric built-ins, int and float), it calls this ...
Select rows which are not present in other table
...ip_location
WHERE ip = l.ip
);
Also consider:
What is easier to read in EXISTS subqueries?
LEFT JOIN / IS NULL
Sometimes this is fastest. Often shortest. Often results in the same query plan as NOT EXISTS.
SELECT l.ip
FROM login_log l
LEFT JOIN ip_location i USING (ip) -- short...
Conveniently map between enum and int / String
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Really and truly read the question. If you're dealing with a legacy database or external system that has defined integers that you don't want to propagate through your own code, then this is exactly one of those cases. The ordinal is an ext...
Eclipse Android and gitignore
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@checklist Did you not read the question? Or is it that did you not understand my point? He asked "What files/folders can I safely ignore for inclusion with git?", the answer to which IS ANY of them. How do you know he doesn't want to temporarily ...
Sending a message to nil in Objective-C
As a Java developer who is reading Apple's Objective-C 2.0 documentation: I wonder what " sending a message to nil " means - let alone how it is actually useful. Taking an excerpt from the documentation:
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Setting dynamic scope variables in AngularJs - scope.
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Just to add into alread given answers, the following worked for me:
HTML:
<div id="div{{$index+1}}" data-ng-show="val{{$index}}">
Where $index is the loop index.
Javascript (where value is the passed parameter to the function and it ...