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Filter Java Stream to 1 and only 1 element
...ollector<T, ?, T> toSingleton() {
return Collectors.collectingAndThen(
Collectors.toList(),
list -> {
if (list.size() != 1) {
throw new IllegalStateException();
}
return list.get(0);
...
How do I create a readable diff of two spreadsheets using git diff?
... @Thecrocodilehunter: you can always delete that row at the top and then compare the rest. If the differences are a lot more complex, then of course you need a different tool. This is useful for quick one-off comparisons, like when Excel says you changed the spreadsheet and you're afraid yo...
How to pass anonymous types as parameters?
...and don't mind a little reflection to deal with the data you're receiving, then this is perfect. Thanks for the answer @Tim S.
– Larry Smith
Oct 5 '16 at 17:05
add a comment
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How to do a Jquery Callback after form submit?
... lets you use jQuery.ajax() to submit the existing form in the background, then catch the reply from the server and do something with it.
– Warren Young
Apr 9 '14 at 19:15
15
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How to select rows from a DataFrame based on column values?
...sh to do this many times, it is more efficient to
make an index first, and then use df.loc:
df = df.set_index(['B'])
print(df.loc['one'])
yields
A C D
B
one foo 0 0
one bar 1 2
one foo 6 12
or, to include multiple values from the index use df.index.isin:
df....
Remove all the elements that occur in one list from another
...
You could also just set l2s = set(l2) and then say l3 = [x for x in l1 if x not in l2s]. Slightly easier.
– spelchekr
Jun 10 '15 at 19:40
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How to run a shell script at startup
... run at levels 3, 4, and 5, and the priority for start/stop is 99 and 10.
Then, as user root you can use chkconfig to enable or disable the script at startup:
chkconfig --list apex
chkconfig --add apex
And you can use service start/stop apex.
...
Is there a VB.NET equivalent for C#'s '??' operator?
...obj As T, ByVal ParamArray args() As T) As T
If obj IsNot Nothing Then
Return obj
End If
Dim arg As T
For Each arg In args
If arg IsNot Nothing Then
Return arg
End If
Next
Return Nothing
End F...
What is the cleanest way to ssh and run multiple commands in Bash?
...ues. For instance, if you quote the "limit string" (ie. EOF in the above), then you can't do variable substitutions. But without quoting the limit string, variables are substituted. For example, if you have defined $NAME above in your shell script, you could do
ssh otherhost /bin/bash << EOF
...
Is there an opposite to display:none?
...to my self "great example, yep, yep, they're all opposite to display:none" then you read "just like there's no one hair style that's the opposite of bald" Wow plus 1, nicely put.
– Chef_Code
Nov 17 '15 at 6:10
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