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How can I grep hidden files?
...iles (a directory is also a file).
grep -r search * .*
The * will match all files except hidden ones and .* will match only hidden files. However this will fail if there are either no non-hidden files or no hidden files in a given directory. You could of course explicitly add .git instead of .*.
...
Simplest way to do a recursive self-join?
...e ultimate ancestors in your chain, change it as appropriate
UNION ALL
SELECT m.*
FROM mytable m
JOIN q
ON m.parentID = q.PersonID
)
SELECT *
FROM q
By adding the ordering condition, you can preserve the tree order:
WITH q AS
...
IntelliJ: Working on multiple projects
...oes not cover them. The two answers tackle different situations and are equally relevant, no one is better than the other.
– luk2302
Jul 13 '17 at 7:48
2
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What's the difference between struct and class in .NET?
...or a struct, that means that the variable contains the entire struct, with all its fields.
A variable containing a reference type contains a pointer, or a reference to somewhere else in memory where the actual value resides.
This has one benefit, to begin with:
value types always contains a valu...
What is the best way to paginate results in SQL Server
...E OrderDate >= '1980-01-01'
...which may seem inefficient, but is actually pretty performant, assuming all indexes etc. are properly set up.
Next, to get actual results back in a paged fashion, the following query would be most efficient:
SELECT *
FROM ( SELECT ROW_NUMBER() OVER ( ORDE...
How to show particular image as thumbnail while implementing share on Facebook?
...http://blog.capstrat.com/articles/facebook-share-thumbnail-image/
Specifically, use a tag like the following:
<link rel="image_src"
type="image/jpeg"
href="http://www.domain.com/path/icon-facebook.gif" />
The name of the image must be the same as in the example.
Click "Makin...
Find TODO tags in Eclipse
...
Is there an easy way to view all methods which contain this comment? Some sort of menu option?
Yes, choose one of the following:
1) Go to Window → Show View → Tasks(Not TaskList). The new view will show up where the "Console" and "Problems" tabs ...
How does one reorder columns in a data frame?
... has four columns like so df[,c(1,2,3,4)].
Note the first comma means keep all the rows, and the 1,2,3,4 refers to the columns.
To change the order as in the above question do df2[,c(1,3,2,4)]
If you want to output this file as a csv, do write.csv(df2, file="somedf.csv")
...
How to give System property to my test via Gradle and -D
...se methods to work. Whatever I do myProperty is always null. This includes all of the methods mentioned below, too. I am wondering if this is something to do with a more recent version, as all comments are from 2018? @CLOVIS did you find a solution to this?
– Hester Lyons
...
bind event only once
...
Be careful, because this unbinds ALL click events, and it is not always wanted behaviour. For example, when you bind something to document, you want to unbind only that one event, not all of them.
– Mārtiņš Briedis
J...