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How to avoid warning when introducing NAs by coercion
... na = x %in% na.strings
x[na] = 0
x = as.numeric(x)
x[na] = NA_real_
x
}
as.num(c("1", "2", "X"), na.strings="X")
#[1] 1 2 NA
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How to assign from a function which returns more than one value?
... this purpose. For example within the function you would have
x = desired_return_value_1 # (vector, matrix, etc)
y = desired_return_value_2 # (vector, matrix, etc)
returnlist = list(x,y...)
} # end of function
main program
x = returnlist[[1]]
y = returnlist[[2]]
...
Windows 7 SDK installation failure
...\AppData\Local\Temp\ or %temp%. The log file is most likely called SDKSetup_7.xxxxx.log.
Solution: Uninstall any existing Visual C++ 2010 redistributable.
I just had this problem, and I looked at the solution at Ctrl+F5, Fix Problem Installing Windows SDK for Windows 7, but it didn't work.
I goo...
How to call Android contacts list?
...cation manifest.
<uses-permission android:name="android.permission.READ_CONTACTS"/>
2. Calling the Contact Picker
Within your Activity, create an Intent that asks the system to find an Activity that can perform a PICK action from the items in the Contacts URI.
Intent intent = new Intent(I...
Asynchronous Process inside a javascript for loop [duplicate]
...ForumPost&subject=Demo' + i + '&message=Here%20is%20the%20Demo&_charset_=UTF-8';
http.open('POST', url, true);
http.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
http.onreadystatechange = function() {
console.log("Done " + i + "<<<<...
What is the convention for word separator in Java package names?
...ample, com.example.deepspace, not com.example.deepSpace or com.example.deep_space.
— Google Java Style Guide: 5.2 Rules by identifier type: 5.2.1 Package names.
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How can I detect if a browser is blocking a popup?
...f code from our JS library.
openPopUp: function(urlToOpen) {
var popup_window=window.open(urlToOpen,"myWindow","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, copyhistory=yes, width=400, height=400");
try {
popup_window.foc...
How to serialize an object to XML without getting xmlns=“…”?
...ings()
settings.OmitXmlDeclaration = True
Using ms As New MemoryStream(), _
sw As XmlWriter = XmlWriter.Create(ms, settings), _
sr As New StreamReader(ms)
xs.Serialize(sw, obj, ns)
ms.Position = 0
Console.WriteLine(sr.ReadToEnd())
End Using
in C# like this:
//Create our own namespaces fo...
How to lazy load images in ListView in Android
...nd after sometime you can purge your hardlist :)
– AZ_
Jan 18 '11 at 8:08
38
Google Shelves proje...
Using a dispatch_once singleton model in Swift
...ound for the lack of static constants and variables in functions.
dispatch_once
The traditional Objective-C approach ported to Swift. I'm fairly certain there's no advantage over the nested struct approach but I'm putting it here anyway as I find the differences in syntax interesting.
class Singl...