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Two way/reverse map [duplicate]
... — whether that's a hash, a sorted list, a binary tree, a trie, a suffix array full of sistrings, or something even more exotic. The simple way to do that in Python is to use a hash.
– Kragen Javier Sitaker
Sep 22 '09 at 19:32
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ViewPager and fragments — what's the right way to store fragment's state?
...create, so the only way to reference was to somehow store references in an Array to be restored after the rotation/configuration change.
Workaround
- The key concept was to have the Activity (which displays the Fragments) also manage the array of references to existing Fragments, since this activit...
How to force garbage collector to run?
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Say you had an array of weak references and wanted to check if any 'live' references existed. It would make sense to call GC.Collect() before checking. Just saying.
– Rich Ehmer
Apr 10 '14 at 15:10
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Version vs build in Xcode
...cifiers:2 means look at the item at index 2 under the PreferenceSpecifiers array in your plist file, so for a 0-based index, that's the 3rd preference setting in the array.
productVersion=$(/usr/libexec/PlistBuddy -c "Print CFBundleShortVersionString" "$INFOPLIST_FILE")
/usr/libexec/PlistBuddy -c "...
How do I get a substring of a string in Python?
...r completeness as nobody else has mentioned it. The third parameter to an array slice is a step. So reversing a string is as simple as:
some_string[::-1]
Or selecting alternate characters would be:
"H-e-l-l-o- -W-o-r-l-d"[::2] # outputs "Hello World"
The ability to step forwards and backward...
MongoDB and “joins” [duplicate]
...eld from the documents of the "from" collection>,
as: <output array field>
}
}
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Where do I use delegates? [closed]
...gate is the Predicate. In the example from the link, you will notice that Array.Find takes the array to search and then a predicate to handle the criteria of what to find. In this case it passes a method ProductGT10 which matches the Predicate signature.
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Access to private inherited fields via reflection in Java
...System.out.println(f.get(b));
}
}
(Or Class.getDeclaredFields for an array of all fields.)
Output:
5
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How can you encode a string to Base64 in JavaScript?
... This isn’t a problem if you’re actually treating the string as a byte array, but if you’re trying to do something else then you’ll have to encode it first.
atob() returns a “string” where each character represents an 8-bit byte – that is, its value will be between 0 and 0xff. This doe...
How to display nodejs raw Buffer data as Hex string
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It returns for me [object ArrayBuffer]? what's wrong?
– Mamdouh Saeed
Aug 25 at 12:11
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