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What's the point of 'const' in the Haskell Prelude?
... @stusmith: You can use it in some interesting ways: head = foldr const (error "Prelude.head: empty list")
– rampion
Sep 14 '11 at 0:35
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Is there a Python equivalent of the C# null-coalescing operator?
... use this to trigger the default value without using None specifically (an error object, for example).
In some languages this behavior is referred to as the Elvis operator.
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XPath with multiple conditions
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For followers, the error message "Expected ], but found: &&" meant "use the and keyword instead of &&" (as this answer specifies)
– rogerdpack
Dec 15 '16 at 21:56
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What is the difference between `let` and `var` in swift?
...t" // OK
letTest.str = "another test" // Still OK
//letTest = CTest() // Error
var varTest1 = CTest()
var varTest2 = CTest()
var varTest3 = CTest()
varTest1.str = "var 1"
varTest2.str = "var 2"
varTest3 = varTest1
varTest1.str = "var 3"
varTest3.str // "var 3"
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Encoding an image file with base64
...Øÿà'. However, when I run this alone as a substitute for data I get an error. The encoded string is much longer for comparison. So I think that likely stores the image data. does the decoded string simply reference the encoded string or something? It seems far too short for data storage.
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How to install Hibernate Tools in Eclipse?
...ns (+1). However, as soon as I try to install it, I received the following error: Cannot complete the install because of a conflicting dependency. Software being installed: Hibernate Tools 3.7.0.Final-v20130717-0715-B84 (org.hibernate.eclipse.feature.feature.group 3.7.0.Final-v20130717-0715-B84). ...
What is the best (idiomatic) way to check the type of a Python variable? [duplicate]
...m Novice to Professional) is to try <value> + '' and check for a TypeError. If TypeError is not raised, then it is string-like. Only downside is that I don't know the performance cost if the string is large. Maybe the interpreter is smart enough that there is essentially zero cost? I don't kno...
Dynamically updating plot in matplotlib
...rg/Cookbook/Matplotlib/Animations) seems to be broken (I get a "Forbidden" error)
– David Doria
Sep 18 '15 at 10:55
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What does the “__block” keyword mean?
... blockName = ^()
{
stackVariable++;
}
}
it will give an error like "variable is not assignable" because the stack variable inside the block are by default immutable.
adding __block(storage modifier) ahead of it declaration make it mutable inside the block i.e __block int stackVa...
How do you remove a specific revision in the git history?
... I would like to carry this sol. but I get the MERGE CONFLICT error. I used scenario mentioned in stackoverflow.com/questions/2938301/remove-specific-commit and am unable to remove the 2nd commit in that example.
– maan81
Sep 27 '14 at 4:44
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