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In Scala, what exactly does 'val a: A = _' (underscore) mean?
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val a: A = _ is a compile error. For example:
scala> val a: String = _
<console>:1: error: unbound placeholder parameter
val a: String = _
^
What does work is var a: A = _ (note var instead of val). As...
How to compare two dates?
How would I compare two dates to see which is later, using Python?
5 Answers
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Using Vim's persistent undo?
...st on Windows so I edited the answer to call mkdir twice to ensure Windows compatibility.
– Matthias Braun
Feb 18 '15 at 15:11
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new DateTime() vs default(DateTime)
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KeyValuePair VS DictionaryEntry
...vantage of using a KeyValuePair<TKey,TValue> is that we can give the compiler more information about what is in our dictionary. To expand on Chris' example (in which we have two dictionaries containing <string, int> pairs).
Dictionary<string, int> dict = new Dictionary<string,...
Elegant method to generate array of random dates within two dates
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How to create a new branch from a tag?
... If this doesn't work because of "<tag> is not a valid commit" or a similar error (often when working on a shared repository), refer to stackoverflow.com/questions/35979642/…
– SalmonKiller
Nov 9 '18 at 23:04
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Adding a guideline to the editor in Visual Studio
...hanging the registry yourself:
http://visualstudiogallery.msdn.microsoft.com/en-us/0fbf2878-e678-4577-9fdb-9030389b338c
http://visualstudiogallery.msdn.microsoft.com/en-us/7f2a6727-2993-4c1d-8f58-ae24df14ea91
These are also part of the Productivity Power Tools, which includes many other very use...
How do I make HttpURLConnection use a proxy?
...Since 8u11 this will not work by default with Basic authentication, oracle.com/technetwork/java/javase/8u111-relnotes-3124969.html jdk.http.auth.tunneling.disabledSchemes system property must be set to emtpty
– white
Dec 20 '16 at 10:43
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Windows batch: call more than one command in a FOR loop?
Is it possible in Windows batch file to call more than one command in a single FOR loop? Let's say for example I want to print the file name and after delete it:
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