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How to check for the type of a template parameter?
...ioned the main logic can be done in a different function, which accepts an extra flag to indicate the type, and this specialized declaration can just set the flag accordingly and directly pass on all the other arguments without touching anything. So if 10 different classes need to be handled, it is ...
What is the difference between join and merge in Pandas?
...
pandas.merge() is the underlying function used for all merge/join behavior.
DataFrames provide the pandas.DataFrame.merge() and pandas.DataFrame.join() methods as a convenient way to access the capabilities of pandas.merge(). For example, df1.merge(right=df2, ...) is equiva...
Explaining Python's '__enter__' and '__exit__'
...
Using these magic methods (__enter__, __exit__) allows you to implement objects which can be used easily with the with statement.
The idea is that it makes it easy to build code which needs some 'cleandown' code executed (think of it as a try-finally block). Some more ex...
Making the iPhone vibrate
...esPlayAlertSound(kSystemSoundID_Vibrate)
Instead of having to go thru the extra cast step
(Props to @Dov)
Original Answer (Swift 1.x)
And, here's how you do it on Swift (in case you ran into the same trouble as I did)
Link against AudioToolbox.framework (Go to your project, select your target, buil...
Adding a new entry to the PATH variable in ZSH
...hen when it runs .zshrc (or .bashrc or whatever), that's what lets you add extra things to that path.
– Linuxios
Nov 18 '19 at 0:04
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show 6...
Method Resolution Order (MRO) in new-style classes?
...ject'>)
with A forced to come in resolution order only once and after all of its subclasses, so that overrides (i.e., C's override of member x) actually work sensibly.
It's one of the reasons that old-style classes should be avoided: multiple inheritance with "diamond-like" patterns just doesn...
How to fix “Headers already sent” error in PHP
...rom output logic.
Place form processing code atop scripts.
Use temporary string variables to defer messages.
The actual output logic and intermixed HTML output should follow last.
Whitespace before <?php for "script.php line 1" warnings
If the warning refers to output in line 1, then it's mo...
Is VB really case insensitive?
...s, when programming you can think of VB.NET as case-insensitive apart from string-comparisons, XML, and a few other situations...
I think you're interested in what's under the hood. Well, the .NET Common Language Runtime is case-sensitive, and VB.NET code relies on the runtime, so you can see it mu...
Failed to serialize the response in Web API with Json
...make things more confusing.
Example:
public class UserModel {
public string Name {get;set;}
public string Age {get;set;}
// Other properties here that do not reference another UserModel class.
}
share
...
Is the Scala 2.8 collections library a case of “the longest suicide note in history”? [closed]
...mutable.BitSet = BitSet(2, 3, 4)
scala> val displayed = bits map { _.toString + "!" }
displayed: scala.collection.immutable.Set[java.lang.String] = Set(1!, 2!, 3!)
See how you always get the best possible type? If you map Ints to Ints you get again a BitSet, but if you map Ints to Strings, you...