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Are C++ enums signed or unsigned?
... // signed enum
enum Y : unsigned int { ... }; // unsigned enum
Even now, though, some simple validation can be achieved by using the enum as a variable or parameter type like this:
enum Fruit { Apple, Banana };
enum Fruit fruitVariable = Banana; // Okay, Banana is a member of the Fruit enu...
Best practices when running Node.js with port 80 (Ubuntu / Linode) [closed]
...p2-bin
sudo setcap cap_net_bind_service=+ep `readlink -f \`which node\``
Now, when you tell a Node application that you want it to run on port 80, it will not complain.
Check this reference link
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Package doesn't exist error in intelliJ
... tool window:
right click on root pom.xml,
press Add as Maven project,
now unignoring any ignored modules from Maven tool window:
select all ignored (grey) Maven modules,
right click on them,
press Unignore,
and finally rebuilding using Build > Rebuild project. This assumes that a mvn cle...
Mysql error 1452 - Cannot add or update a child row: a foreign key constraint fails
...at references another, but it is failing for some reason. With my limited knowledge of MySQL, the only thing that could possibly be suspect is that there is a foreign key on a different table referencing the one I am trying to reference.
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How do I make a JAR from a .java file?
...et your other project and add this .jar file to project libraries.
You can now reference classes from this library and its methods directly from code, if import is automatically done for you.
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Format date in a specific timezone
...imezone ("America/Phoenix") if you want to handle DST and other rules for known time zones.
– quietmint
Aug 4 '17 at 1:17
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Can you change a path without reloading the controller in AngularJS?
...ted, but the documentation (docs.angularjs.org/api/ngRoute.$routeProvider) now says: [reloadOnSearch=true] - {boolean=} - reload route when only $location.search() or $location.hash() changes.
– Rhys van der Waerden
Feb 11 '14 at 1:35
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Reason to Pass a Pointer by Reference in C++?
.... freeing it). Returning a plain old reference is a different thing and I know that.
– BarbaraKwarc
Sep 26 '16 at 10:37
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What is /dev/null 2>&1?
...ns three files, standard input, standard output, and standard error as we know whenever a file is opened, the operating system (from kernel) returns a non-negative integer called a file descriptor. The file descriptor for these files are 0, 1, and 2, respectively.
So 2>&1 simply says redirec...
How to avoid annoying error “declared and not used”
... golint etc, and removes and adds import entries. So at least that part is now automatic.
I will admit its not 100% of the solution to the question, but however useful enough.
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