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How do I find where JDK is installed on my windows machine?
...ok at HKLM\SOFTWARE\JavaSoft\Java Runtime Environment and HKLM\SOFTWARE\Wow6432Node\JavaSoft\Java Runtime Environment for 32-bit java on 64 bit Windows.
This is how java itself finds out different versions installed. And this is why both 32-bit and 64-bit version can co-exist and works fine without...
Int division: Why is the result of 1/3 == 0?
...at least one operand of type long, then the operation is carried out using 64-bit precision, and the result of the numerical operator is of type long. If the other operand is not long, it is first widened (§5.1.5) to type long by numeric promotion (§5.6).
And an example is always the best way t...
Installing multiple instances of the same windows service on a server
...service running on the same server and configured to point at separate databases.
10 Answers
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How to create a zip archive of a directory in Python?
...tar
root_dir=None, # root for archive - current working dir if None
base_dir=None) # start archiving from here - cwd if None too
Here the zipped archive will be named zipfile_name.zip. If base_dir is farther down from root_dir it will exclude files not in the base_dir, but still archive t...
企业级负载平衡简介 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... a google.com
google.com has address 72.14.207.99
google.com has address 64.233.167.99
google.com has address 64.233.187.99
$ host -t a google.com
google.com has address 64.233.187.99
google.com has address 72.14.207.99
google.com has address 64.233.167.99
可以看到，不同的DNS...
keytool error Keystore was tampered with, or password was incorrect
...ease make sure its for default debug.keystore file , not for your project based keystore file (Password might change for this).
Works well for MacOS Sierra 10.10+ too.
I heard, it works for linux environment as well. i haven't tested that in linux yet.
...
How can I list all the deleted files in a Git repository?
... -n '/^commit/h;/\/some_dir\//{G;s/\ncommit \(.*\)/ \1/gp}'
delete mode 100644 blah/some_dir/file1 d3bfbbeba5b5c1da73c432cb3fb61990bdcf6f64
delete mode 100644 blah/some_dir/file2 d3bfbbeba5b5c1da73c432cb3fb61990bdcf6f64
delete mode 100644 blah/some_dir/file3 9c89b91d8df7c95c6043184154c476623414fcb7
...
Run an app on a multiple devices automatically in Android Studio
....42.35.5791312, built on August 9, 2019
JRE: 1.8.0_202-release-1483-b03 amd64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Windows Server 2016 10.0
In this update they have added in-built option to run application on multiple devices.
The IDE has a new drop-down menu that lets you quickly ...
Remove NA values from a vector
...932000 Just to be clear for others, your complaint is really about how the base R function max() behaves (as, for instance, when doing max(c(NA, NA)). Personally, I think its behavior is reasonable; I expect it was constructed that way so that you get the expected result when doing things like a <...
efficient circular buffer?
...
Based on MoonCactus's answer, here is a circularlist class. The difference with his version is that here c[0] will always give the oldest-appended element, c[-1] the latest-appended element, c[-2] the penultimate... This is ...