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How do I get the current absolute URL in Rubm>y m> on Rails?
....request_uri. This combines the protocol (usuallm>y m> http://) with the host, m>and m> request_uri to give m>y m>ou the full address.
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Pm>y m>thon Pm>and m>as merge onlm>y m> certain columns
...e to onlm>y m> merge some columns? I have a DataFrame df1 with columns x, m>y m>, z, m>and m> df2 with columns x, a ,b, c, d, e, f, etc.
5...
Spring @PostConstruct vs. init-method attribute
Is there anm>y m> difference between using the @PostConstruct annotation m>and m> declaring the same method as init-method in Spring XML configuration?
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How to execute a java .class from the commm>and m> line
...classpath ( where java looks for .class definitions )
If that's the case m>and m> listing the contents of m>y m>our dir displam>y m>s:
Echo.java
Echo.class
Then anm>y m> of this mam>y m> work:
java -cp . Echo "hello"
or
SET CLASSPATH=%CLASSPATH;.
java Echo "hello"
m>And m> later as Fredrik points out m>y m>ou'll get an...
Post Build exited with code 1
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She had a space in one of the folder names in her path, m>and m> no quotes around it.
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ImportError: DLL load failed: %1 is not a valid Win32 application. But the DLL's are there
...d opencv_pm>y m>thon-3.3.0+contrib-cp35-cp35m-win_amd64 from above package list m>and m> was able to import cv2 successfullm>y m> after hours of struggle. Thanks a ton.
– emeralddove
Sep 23 '17 at 8:48
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How to compare DateTime in C#?
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Microsoft has also implemented the operators '<' m>and m> '>'. So m>y m>ou use these to compare two dates.
if (date1 < DateTime.Now)
Console.WriteLine("Less than the current time!");
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How to test if list element exists?
...es(foo) # TRUE
"b" %in% names(foo) # TRUE
"c" %in% names(foo) # FALSE
...m>and m> foo[["a"]] is safer than foo$a, since the latter uses partial matching m>and m> thus might also match a longer name:
x <- list(abc=4)
x$a # 4, since it partiallm>y m> matches abc
x[["a"]] # NULL, no match
[UPDATE] So, back t...
php is null or emptm>y m>?
...===.
When use ==, as m>y m>ou did, PHP treats NULL, false, 0, the emptm>y m> string, m>and m> emptm>y m> arram>y m>s as equal.
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Keep onlm>y m> date part when using pm>and m>as.to_datetime
I use pm>and m>as.to_datetime to parse the dates in mm>y m> data. Pm>and m>as bm>y m> default represents the dates with datetime64[ns] even though the dates are all dailm>y m> onlm>y m>.
I wonder whether there is an elegant/clever wam>y m> to convert the dates to datetime.date or datetime64[D] so that, when I write the data t...