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How do I return multiple values from a function? [closed]
...ong lists of tuples, such as results of DB queries). For individual items (if the function in question is not called often) dictionaries and classes are just fine as well. But namedtuples are a nice/nicer solution in this case as well.
– Lutz Prechelt
Feb 23 '1...
What does the “@” symbol mean in reference to lists in Haskell?
... between (1) or (2):(3).
This syntax actually works for any constructor; if you have data Tree a = Tree a [Tree a], then t@(Tree _ kids) gives you access to both the tree and its children.
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SQLite - UPSERT *not* INSERT or REPLACE
...ddition to INSERT that causes the INSERT to behave as an UPDATE or a no-op if the INSERT would violate a uniqueness constraint. UPSERT is not standard SQL. UPSERT in SQLite follows the syntax established by PostgreSQL.
GOOD but tendous: This will update 2 of the columns.
When ID=1 exists, the NA...
Select random row from a sqlite table
...ed with unix epoc for today at noon so it shows the same book all day even if the query is run multiple times. Yes I know caching is more efficient for this use case just an example.
– danielson317
Apr 22 at 17:18
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How to change the style of the title attribute inside an anchor tag?
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I know this is a really old reply, but this is the only one I've found that is really useful. I recommend using aria-label instad of alt or title as it costs nothing and it will help people with acessibility..
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How do I find out which settings.xml file maven is using
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Very helpful. I was trying to specify "user settings" in MAVEN_OPTS, unfortunately this show that's not working.
– will
Nov 19 '18 at 23:13
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Significance of -pthread flag when compiling
...h -D_REENTRANT, and linked with -lpthread. On other platforms, this could differ. Use -pthread for most portability.
Using _REENTRANT, on GNU libc, changes the way some libc headers work. As a specific example, it makes errno call a function returning a thread-local location.
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Java: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification
...it, it returns a lot of errors. It seems that I have a problem with my certificate. Is it possible to ignore the client-server authentication? If so, how?
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Why JSF calls getters multiple times
Let's say I specify an outputText component like this:
9 Answers
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How to create standard Borderless buttons (like in the design guideline mentioned)?
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If you use HoloEverywhere it works for API level 7+. You must change ?android:attr/selectableItemBackground for ?attr/selectableItemBackground and ?android:attr/dividerVerticalfor ?attr/dividerVertical
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