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What is the difference between a var and val definition in Scala?
... to a var can. However, said object can have its internal state modified. For example:
class A(n: Int) {
var value = n
}
class B(n: Int) {
val value = new A(n)
}
object Test {
def main(args: Array[String]) {
val x = new B(5)
x = new B(6) // Doesn't work, because I can't replace the ...
How to simulate a click by using x,y coordinates in JavaScript?
Is it possible to use given coordinates in order to simulate a click in JavaScript within a webpage?
5 Answers
...
Is there a date format to display the day of the week in java?
I know of date formats such as
"yyyy-mm-dd" -which displays date in format 2011-02-26
"yyyy-MMM-dd" -which displays date in format 2011-FEB-26
...
Get hostname of current request in node.js Express
...host in:
request.headers.host
But that relies on an incoming request.
More at http://nodejs.org/docs/v0.4.12/api/http.html#http.ServerRequest
If you're looking for machine/native information, try the process object.
sha...
Replacing blank values (white space) with NaN in pandas
..._range('2000-01-01','2000-01-06'))
# replace field that's entirely space (or empty) with NaN
print(df.replace(r'^\s*$', np.nan, regex=True))
Produces:
A B C
2000-01-01 -0.532681 foo 0
2000-01-02 1.490752 bar 1
2000-01-03 -1.387326 foo 2
2000-01-04 0.814772 baz...
How to convert NSDate into unix timestamp iphone sdk?
...
I believe this is the NSDate's selector you're looking for:
- (NSTimeInterval)timeIntervalSince1970
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How do I clear/delete the current line in terminal?
If I'm using terminal and typing in a line of text for a command, is there a hotkey or any way to clear/delete that line?
1...
Android Studio - Ambiguous method call getClass()
I'm using Android Studio for my Android application.
My code works and compiles.
Recently, the IDE showes me error (red lines) on getClass of the following code:
...
How to create a static library with g++?
...ike to create header.a . Test the header.a in test.cpp . I am using g++ for compiling.
3 Answers
...
Write to UTF-8 file in Python
...text, but you've given me a byte string!"
Try writing the Unicode string for the byte order mark (i.e. Unicode U+FEFF) directly, so that the file just encodes that as UTF-8:
import codecs
file = codecs.open("lol", "w", "utf-8")
file.write(u'\ufeff')
file.close()
(That seems to give the right an...