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What happens to C# Dictionary lookup if the key does not exist?
I tried checking for null but the compiler warns that this condition will never occur. What should I be looking for?
9 Ans...
Possibility of duplicate Mongo ObjectId's being generated in two different collections?
Is it possible for the same exact Mongo ObjectId to be generated for a document in two different collections? I realize that it's definitely very unlikely, but is it possible?
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How do I find the duplicates in a list and create another list with them?
...tes, something like:
a = [1,2,3,2,1,5,6,5,5,5]
import collections
print([item for item, count in collections.Counter(a).items() if count > 1])
## [1, 2, 5]
Note that Counter is not particularly efficient (timings) and probably overkill here. set will perform better. This code computes a list...
Disable mouse scroll wheel zoom on embedded Google Maps
I am working on a WordPress site where the authors usually embed Google Maps using iFrames in most posts.
30 Answers
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How to check if a process is running via a batch script
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Another possibility I came up with, inspired by using grep, is:
tasklist /FI "IMAGENAME eq myapp.exe" 2>NUL | find /I /N "myapp.exe">NUL
if "%ERRORLEVEL%"=="0" echo Program is running
It doesn't need to save an extra file, so I pref...
Understanding Python super() with __init__() methods [duplicate]
I'm trying to understand the use of super() . From the looks of it, both child classes can be created, just fine.
7 Answe...
Fastest method to escape HTML tags as HTML entities?
I'm writing a Chrome extension that involves doing a lot of the following job: sanitizing strings that might contain HTML tags, by converting < , > and & to &lt; , &gt; and &amp; , respectively.
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Stop Excel from automatically converting certain text values to dates
...en I can add to my csv for a certain field so Excel doesn't try to convert it to a date?
34 Answers
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UINavigationBar custom back button without title
How can I customize the navigation back button in iOS 7 and above without title? (i.e. with the arrow only)
36 Answers
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Why does InetAddress.isReachable return false, when I can ping the IP address?
...ons :
Detect internet Connection using Java
How do I test the availability of the internet in Java?
And even a reported bug on this same matter :
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4921816
Part 1 : A reproducible example of the problem
Note that in this case, it fails.
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