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Difference between $(document.body) and $('body')
...tatement is not completely correct. They may refer to the same element. Usually even. But not always :). See my answer below.
– jvenema
Feb 28 '18 at 22:28
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Command line: piping find results to rm
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You are actually piping rm's output to the input of find. What you want is to use the output of find as arguments to rm:
find -type f -name '*.sql' -mtime +15 | xargs rm
xargs is the command that "converts" its standard input into arg...
Get current batchfile directory
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System read-only variable %CD% keeps the path of the caller of the batch, not the batch file location.
You can get the name of the batch script itself as typed by the user with %0 (e.g. scripts\mybatch.bat). Parameter extensions can be applied to this so %~dp0 will return the D...
Android customized button; changing text color
... It beter if the color selector is located in res/color folder. And when call, use: android:textColor="@color/button_text_color"
– Justin
Oct 23 '14 at 4:55
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How do I find out if first character of a string is a number?
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Character.isDigit(string.charAt(0))
Note that this will allow any Unicode digit, not just 0-9. You might prefer:
char c = string.charAt(0);
isDigit = (c >= '0' && c <= '9');
Or the slower regex solutions:
s.substring(0, 1).matches("\\d")
// or the equivalent
s.su...
How to find a table having a specific column in postgresql
...ss query missed two (of 150) tables. The information_schema query captured all of the tables. I'll have to dig around to see why two tables fell outside of the join. In any event thanks for the info!
– Thomas Altfather Good
Aug 26 '19 at 15:30
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Temporarily switch working copy to a specific Git commit
How to switch to specific Git commit without losing all the commits made after it ?
3 Answers
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Eclipse: How do you change the highlight color of the currently selected method/expression?
...f this highlight, but after scouring the eclipse preferences many times in all 3 places, I have yet to find it.
5 Answers
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Can I add a UNIQUE constraint to a PostgreSQL table, after it's already created?
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@Jasen That's totally clear. Just wanted to emphasize that the answer "But if you have non-unique entries on your table. Here is the how to add unique constraint on your table." will not work. Non-unique entries must of course always be conso...
std::shared_ptr of this
...e_shared_from_this just for this purpose. You inherit from it and you can call .shared_from_this() from inside the class. Also, you are creating circular dependencies here that can lead to resource leaks. That can be resolved with the use of std::weak_ptr. So your code might look like this (assuming...