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Why does PHP consider 0 to be equal to a string?
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You are doing == which sorts out the types for you.
0 is an int, so in this case it is going to cast 'e' to an int. Which is not parsable as one and will become 0. A string '0e' would become 0 and would match!
Use ===
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Difference between maven scope compile and provided for JAR packaging
...t as a JAR? If it was WAR, I'd understand - the artifact would be included or not in WEB-INF/lib. But in case of a JAR it doesn't matter - dependencies aren't included. They have to be on classpath when their scope is compile or provided . I know that provided dependencies aren't transitive - b...
How do I unlock a SQLite database?
How do I unlock the database so this will work?
35 Answers
35
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What do the terms “CPU bound” and “I/O bound” mean?
... bound if it would go faster if the CPU were faster, i.e. it spends the majority of its time simply using the CPU (doing calculations). A program that computes new digits of π will typically be CPU-bound, it's just crunching numbers.
A program is I/O bound if it would go faster if the I/O subsyste...
What is the difference between instanceof and Class.isAssignableFrom(…)?
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i don't get it - please elaborate on why we can't write a instanceof Bref.getClass(). how can this be the accepted answer with so little explanation (or its lack thereof)?
– Eliran Malka
Mar 28 '13 at 12:58
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Objective-C: Where to remove observer for NSNotification?
.../no longer in a state in which they can properly handle the notification. For this... See above.
Edit (since the answer seems to draw more comments than I would have thought) All I am trying to say here is: it's really hard to give general advice as to when it's best to remove the observer from the...
Is Tomcat running?
...? -gt 0 ]
then
echo "Check tomcat" | mailx -s "Tomcat not running" support@dom.com
fi
I guess you could also use wget to check the health of your tomcat. If you have a diagnostics page with user load etc, you could fetch it periodically and parse it to determine if anything is going wrong.
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Update a dataframe in pandas while iterating row by row
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You can assign values in the loop using df.set_value:
for i, row in df.iterrows():
ifor_val = something
if <condition>:
ifor_val = something_else
df.set_value(i,'ifor',ifor_val)
If you don't need the row values you could simply iterate over the indices...
Can I delete a git commit but keep the changes?
In one of my development branches, I made some changes to my codebase. Before I was able to complete the features I was working on, I had to switch my current branch to master to demo some features. But just using a "git checkout master" preserved the changes I also made in my development branch, th...
Long list of if statements in Java
Sorry I can't find a question answering this, I'm almost certain someone else has raised it before.
15 Answers
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