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When does System.gc() do something?
I know that garbage collection is automated in Java. But I understood that if you call System.gc() in your code that the JVM may or may not decide to perform garbage collection at that point. How does this work precisely? On what basis/parameters exactly does the JVM decide to do (or not do) a GC ...
Remove folder and its contents from git/GitHub's history
...Y_NAME # i.e. 'node_modules' in other examples
git reflog expire --expire=now --all && git gc --prune=now --aggressive
git push --mirror https://project/new-repository
If you want to delete files then use the delete-files option instead:
java -jar bfg.jar --delete-files *.pyc
...
Exif manipulation library for python [closed]
...projects/gexiv2/wiki (became https://wiki.gnome.org/Projects/gexiv2) reads now:
This will work equally well with either Python 2 or 3, which makes
GExiv2 an excellent replacement for pyexiv2, which only supports
Python 2.
So, both Python2 and Python3 are now supported by GExiv2.
Good news...
How to do ToString for a possibly null object?
...
C# 6.0 Edit:
With C# 6.0 we can now have a succinct, cast-free version of the orignal method:
string s = myObj?.ToString() ?? "";
Or even using interpolation:
string s = $"{myObj}";
Original Answer:
string s = (myObj ?? String.Empty).ToString();
or
strin...
Using port number in Windows host file
... @Mat That would be nice, right? I just want others who see this to know to scroll down a little bit and give it a shot. I ended up here when trying to figure out how to map .test domains to my docker images locally on Windows 10, and the netsh answer worked like a charm!
...
How to search contents of multiple pdf files?
...
oh that's cool, glad to know there are advantages to this even though it is much less obvious to most people wtf it is doing
– sjr
Oct 16 '13 at 4:30
...
Java Look and Feel (L&F) [closed]
...ook and Feel Themes | Top 10 (A lot of the preview images on this page are now missing)
oracle.com - Modifying the Look and Feel
wikipedia.org - Pluggable look and feel
Java2s.com - Look and feel
Related topics :
Java gui look and feel changes
Open source laf[look n feel] for java swing applicatio...
How to get cumulative sum
...ata -->
Create Table CUMULATIVESUM (id tinyint , SomeValue tinyint)
**Now let put some data in the table**
Insert Into CUMULATIVESUM
Select 1, 10 union
Select 2, 2 union
Select 3, 6 union
Select 4, 10
here I am joining same table (SELF Joining)
Select c1.ID, c1.SomeValue, c2.SomeValue
...
How can I select and upload multiple files with HTML and PHP, using HTTP POST?
...t explained the PHP part. Over time, this became a popular answer, so I've now expanded to cover both HTML and PHP.
– Mark E. Haase
Mar 7 '15 at 17:26
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Format XML string to print friendly XML string
...Check the following link: How to pretty-print XML (Unfortunately, the link now returns 404 :()
The method in the link takes an XML string as an argument and returns a well-formed (indented) XML string.
I just copied the sample code from the link to make this answer more comprehensive and convenie...