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How to pass data from 2nd activity to 1st activity when pressed back? - android
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This cannot be used for object (only string, boolean, etc)
– FindOut_Quran
Nov 5 '15 at 3:10
1
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How do I check if a variable exists?
...is condition to be true even if myVar is an empty list, zero, empty string etc.
– Gabriel
Jul 27 '18 at 18:09
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Swift: Testing optionals for nil
...else closure, the program has to exit the current scope, by return, break, etc.
guard let x_val = x, x_val > 5 else {
return
}
//x_val available on this scope
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Undo git update-index --assume-unchanged
...config --global alias.hide 'update-index --assume-unchanged'
git config... etc
After saving this to your .gitconfig, you can run a cleaner command.
git hide myfile.ext
or
git unhide myfile.ext
This git documentation was very helpful.
As per the comments, this is also a helpful alias to find...
SqlDataAdapter vs SqlDataReader
...ry on db, and only access this data at different rows, go to rpevious row, etc, then you can use the SQLDatareader and load it into a datatable using dtable.Load(rdr). Then browse up and down within this datatable. You can use this method instead of DataAdapter...
– variable
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How to create a directory and give permission in single command
... 0777--since 777 only specifies the permissions, not the setuids, setgids, etc.)
Now, to apply this to your question in a broader sense--you have (already) got a few options. All the answers above work (at least according to my coreutils). But you may (or are pretty likely to) run into problems with...
Group query results by month and year in postgresql
...are not part of the aggregate (aka, all columns not inside SUM/AVG/MIN/MAX etc functions). This tells the query that the SUM() should be applied for each unique combination of columns, which in this case are the month and year columns. The "1,2" part is a shorthand instead of using the column aliase...
Open Facebook page from Android app?
...regular fb pages , we don't see the Like button, profile and cover photos, etc. it directly opens the Contact info and displays all the posts from the page.
– Neeraj Dwivedi
Sep 12 '19 at 10:04
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How do I format a long integer as a string without separator in Java?
...tle bit when trying to do "real world" patterns with internationalization, etc. Specifically, we have a need to use a "choice" format where the output depends upon the values being displayed, and that's what java.text.ChoiceFormat is for.
Here is an example for how to get this done:
MessageFor...
Can gcc output C code after preprocessing?
...s I've tried do this- they concatenate lines, choke on special characters, etc.) Asuming you have gcc installed, the command line is:
gcc -E -x c -P -C -traditional-cpp code_before.cpp > code_after.cpp
(Doesn't have to be 'cpp'.) There's an excellent description of this usage at http://www.c...