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Java null check why use == instead of .equals()
In Java I am told that when doing a null check one should use == instead of .equals(). What are the reasons for this?
16 An...
Best way to reverse a string
...Console.WriteLine(r);
}
}
(And live running example here: https://ideone.com/DqAeMJ)
It simply uses the .NET API for grapheme cluster iteration, which has been there since ever, but a bit "hidden" from view, it seems.
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How to pipe list of files returned by find command to cat to view all the files
...(cat {} in this case); the \; is to end the -exec command.)
send output of one process as command line arguments to another process
command2 `command1`
for example:
cat `find . -name '*.foo' -print`
(Note these are BACK-QUOTES not regular quotes (under the tilde ~ on my keyboard).)
This will s...
Explicitly set Id with Doctrine when using “AUTO” strategy
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will this set this generator permanently? Can I add one record with forced ID and then let it use autoincrement ids?
– Pavel Dubinin
Jun 25 '14 at 5:38
1
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generate days from date range
... construct a resultset using UNIONs, why not just specify the date and be done with it?
– OMG Ponies
Jan 28 '10 at 21:27
7
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Restful way for deleting a bunch of items
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One option is to create a delete "transaction". So you POST to something like http://example.com/resources/deletes a new resource consisting of a list of resources to be deleted. Then in your application you just do the delet...
Log to the base 2 in python
... @wap26: Above, I'm using the IPython interactive interpreter. One of its features (accessed with the ?) is dynamic object introspection.
– unutbu
Apr 30 '13 at 17:51
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Python argparse: How to insert newline in the help text?
I'm using argparse in Python 2.7 for parsing input options. One of my options is a multiple choice. I want to make a list in its help text, e.g.
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How to RSYNC a single file?
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Also if you are only sending one file you may want to add the "--progress" parameter so you can watch it's progress.
– JoshStrange
Feb 28 '14 at 20:48
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Initial size for the ArrayList
...s, when constructed in this manner, the array list starts its life empty.
One way to add ten elements to the array list is by using a loop:
for (int i = 0; i < 10; i++) {
arr.add(0);
}
Having done this, you can now modify elements at indices 0..9.
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