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Counter increment in Bash loop not working
...bles local to the child process.
One way to solve it is using a temp file for storing the intermediate value:
TEMPFILE=/tmp/$$.tmp
echo 0 > $TEMPFILE
# Loop goes here
# Fetch the value and increase it
COUNTER=$[$(cat $TEMPFILE) + 1]
# Store the new value
echo $COUNTER > $TEMPFILE
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How do I check if a file exists in Java?
... There are some cases where exists() will return an incorrect result. For example, when using an NFS file system there is an issue with stale file handles: bugs.java.com/bugdatabase/view_bug.do?bug_id=5003595 It's kind of obscure, but has been the cause of some frustrating bugs in production c...
Custom ImageView with drop shadow
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Okay, I don't foresee any more answers on this one, so what I ended up going with for now is just a solution for rectangular images. I've used the following NinePatch:
along with the appropriate padding in XML:
<ImageView
andro...
How do you use variables in a simple PostgreSQL script?
For example, in MS-SQL, you can open up a query window and run the following:
10 Answers
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Utils to read resource text file to String (Java) [closed]
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Yes, Guava provides this in the Resources class. For example:
URL url = Resources.getResource("foo.txt");
String text = Resources.toString(url, StandardCharsets.UTF_8);
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How to check Oracle database for long running queries
.... Sometimes things are going slow, but it's because it is blocked waiting for a lock:
select
object_name,
object_type,
session_id,
type, -- Type or system/user lock
lmode, -- lock mode in which session holds lock
request,
block,
ctime -- Time since curre...
What are all possible pos tags of NLTK?
...u first have to download tagsets from the download helper's Models section for this)
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Passing a URL with brackets to curl
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For me, it didn't work. I had to add a \ before each square bracket
– jesusperaltac
Mar 15 '17 at 16:10
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How do I remove code duplication between similar const and non-const member functions?
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For a detailed explanation, please see the heading "Avoid Duplication in const and Non-const Member Function," on p. 23, in Item 3 "Use const whenever possible," in Effective C++, 3d ed by Scott Meyers, ISBN-13: 9780321334879...
Can I target all tags with a single selector?
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For those landing here from google, and wondering what a comma-separated list means in CSS, it's the first example OP gave. That is, h1, h2, h3 {}.
– bluesmonk
May 29 '19 at 17:47
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