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How to free memory in Java?
...s.
Not recommended.
Edit: I wrote the original response in 2009. It's now 2015.
Garbage collectors have gotten steadily better in the ~20 years Java's been around. At this point, if you're manually calling the garbage collector, you may want to consider other approaches:
If you're forcing G...
Split files using tar, gz, zip, or bzip2 [closed]
...ermediate large file when (de)compressing. Use the tar -C option to use a different directory for the resulting files. btw if the archive consists from only a single file, tar could be avoided and only gzip used:
# create archives
$ gzip -c my_large_file | split -b 1024MiB - myfile_split.gz_
# unco...
Git command to show which specific files are ignored by .gitignore
... What version of git are you using? Mine (1.7.0.4) says error: unknown option 'ignored'. Even adding -s as suggested in linked post didn't work.
– Alexander Bird
Oct 25 '12 at 21:49
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Cannot delete or update a parent row: a foreign key constraint fails
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If you were going to do this, why not just remove all of the constraints?
– Sablefoste
Jun 7 '16 at 12:23
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Convert Long into Integer
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Integer i = theLong != null ? theLong.intValue() : null;
or if you don't need to worry about null:
// auto-unboxing does not go from Long to int directly, so
Integer i = (int) (long) theLong;
And in both situations, you might run into overflows (because a Long can store a wider ran...
What is the best way to concatenate two vectors?
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@Gman: That's a fair point since we know that the source is also a vector (where iterator distance has O(1) complexity). Still, the performance guarantees of insert are something to be mindful of when you can often do better by planning ahead.
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Recursive sub folder search and return files in a list python
...dirpath which you call root. The dirnames are supplied so you can prune it if there are folders that you don't wish os.walk to recurse into.
import os
result = [os.path.join(dp, f) for dp, dn, filenames in os.walk(PATH) for f in filenames if os.path.splitext(f)[1] == '.txt']
Edit:
After the late...
MySQL: Transactions vs Locking Tables
...posit all the service fees charged on the transaction. Given (as everyone knows these days) that banks are extraordinarily stupid, let's say their system works like this:
$balance = "GET BALANCE FROM your ACCOUNT";
if ($balance < $amount_being_paid) {
charge_huge_overdraft_fees();
}
$balance...
Running python script inside ipython
...ere); as you note, it just looks in the current directory, appending ".py" if necessary.
There doesn't seem to be a way to specify which file finder to use from the %run magic, but there's nothing to stop you from defining your own magic command that calls into %run with an appropriate file finder....
Min/Max-value validators in asp.net mvc
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Great answer. I would modify the error message a bit: "Enter a value greater than or equal to " is a more (grammatically-speaking) correct error message.
– Tieson T.
Jul 26 '12 at 0:04
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