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Creating an R dataframe row-by-row
...ist a single-row dataframe and advance the list index by one. Finally, do.call(rbind,) on the list.
8 Answers
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Serialize an object to string
...) is used, because you pass an instance of a derived type to a method that calls SerializeObject that is defined in the derived type's base class: http://ideone.com/1Z5J1.
Also, Ideone uses Mono to execute code; the actual Exception you would get using the Microsoft .NET runtime has a different Mes...
How to normalize a path in PowerShell?
...\WINDOWS\system32\fred\frog\..\frag
With an absolute base, it is safe to call the .NET API GetFullPath:
[System.IO.Path]::GetFullPath((Join-Path (Join-Path (pwd) fred\frog) '..\frag'))
Which gives you the fully qualified path and with the .. removed:
C:\WINDOWS\system32\fred\frag
It's not co...
Manual deployment vs. Amazon Elastic Beanstalk
...nd application server on the same machine/instance is not generally a good idea anyway.
In a PAAS system, the DBMS is a separate service. For Amazon, it would be Amazon RDS. Just like with Elastic Beanstalk, where you don't have to worry about the application server and you just upload your WAR fi...
Dependency injection through constructors or property setters?
...ructor approach, because it reduces complexity (what if e.g. the setter is called twice)?
– sleske
Aug 27 '10 at 0:02
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Is “for(;;)” faster than “while (TRUE)”? If not, why do people use it?
...there are only three numbers in programming: 0, 1, and n. anything else is called a magic number."
– Ben Zotto
Apr 9 '10 at 22:32
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You need to use a Theme.AppCompat theme (or descendant) with this activity
... a subclass, ActionBarActivity), to Activity, must also change the various calls with "support" to the corresponding call without "support". So, instead of getSupportFragmentManager, call getFragmentManager.
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Is there a built-in function to print all the current properties and values of an object?
...ted objects etc. according to their authors' preferences. But they all basically boil down to this.
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What is the use of hashCode in Java?
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Buckets aside, hashcode is a method that the object calls to determine the order to store each object in memory. If objects are equal, then their hashcode must also be equal. (converse of this statement is false)
– NoName
Jun 24 '17 at 6:...
How does PHP 'foreach' actually work?
... $k = $it->key();
/* ... */
}
For internal classes, actual method calls are avoided by using an internal API that essentially just mirrors the Iterator interface on the C level.
Iteration of arrays and plain objects is significantly more complicated. First of all, it should be noted that i...