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What are the Ruby Gotchas a newbie should be warned about? [closed]
...e, Greeting << " world!" if Greeting == "Hello" does not generate an error or warning. This is similar to final variables in Java, but Ruby does also have the functionality to "freeze" an object, unlike Java.
Some features which differ notably from other languages:
The usual operators for ...
How do the PHP equality (== double equals) and identity (=== triple equals) comparison operators dif
...t, and will be surprise cast to float against your will, causing a runtime error.
== is not transitive because "0"== 0, and 0 == "" but "0" != ""
PHP Variables that have not been declared yet are false, even though PHP has a way to represent undefined variables, that feature is disabled with ==.
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The Difference Between Deprecated, Depreciated and Obsolete [closed]
...ature still works in the current version of the software, but it may raise error messages or warnings recommending an alternate practice.
The Obsolete attribute marks a program entity as one that is no longer recommended for use. Each use of an entity marked obsolete will subsequently generate a wa...
Save classifier to disk in scikit-learn
...t)
>>> clf.score(digits.data, digits.target) # evaluate training error
0.9526989426822482
>>> filename = '/tmp/digits_classifier.joblib.pkl'
>>> _ = joblib.dump(clf, filename, compress=9)
>>> clf2 = joblib.load(filename)
>>> clf2
SGDClassifier(alpha=0....
Why can't I assign a *Struct to an *Interface?
... me. I'm just wondering why (in that case), it's not simply a compile time error to say var pi *Interface.
– Simon Nickerson
Nov 22 '12 at 11:34
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How do I write stderr to a file while using “tee” with a pipe?
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thanks for that comment; I figured out what my logical error was afterwards: when invoked as an interactive shell, bash prints a command prompt and echoes exit to stderr. However, if stderr is redirected, bash starts as noninteractive by default; compare /bin/bash 2> err and /...
Why doesn't Dictionary have AddRange?
...of the collection is left unchanged. As AddRange can fail due to duplicate errors, the way to keep its behavior consistent with Add would be to also make it atomic by throwing an exception on any duplicate, and leave the state of the original dictionary as unchanged.
As an API consumer, it would be...
Can I mix Swift with C++? Like the Objective-C .mm files
...rom ObjCtoCPlusPlus.mm to ObjCtoCPlusPlus.h file, the compiler return this error: <unknown>:0: error: failed to import bridging header '/Users/Ale/Downloads/shared-master/C-ObjC-Swift/Performance_Console/Performance_Console/Performance_Console-Bridging-Header.h' it's possible move this impo...
Programmatically Determine a Duration of a Locked Workstation?
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Wow, works amazing! no errors no exceptions, smooth and clean!
– Mayer Spitzer
Oct 25 '17 at 17:39
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Deserialize JSON into C# dynamic object?
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I get an error in dynamic obj = serializer.Deserialize(json, typeof(object)); saying that no overload for method with 2 arguments..wrong dll or what?
– Stewie Griffin
Jun 18 '11 at 20:17
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