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Extract digits from a string in Java
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You can use regex and delete non-digits.
str = str.replaceAll("\\D+","");
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psql: could not connect to server: No such file or directory (Mac OS X)
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WARNING: If you delete postmaster.pid without making sure there are really no postgres processes running you, could permanently corrupt your database. (PostgreSQL should delete it automatically if the postmaster has exited.).
SOLUTION: This fixed the issue--I deleted this file, and then everyt...
Android device does not show up in adb list [closed]
... going from MTP to "charging" wasn't enough for me, I had to go all the way and say "PTP" for the connection.
– Emmanuel Touzery
Sep 18 '15 at 12:58
6
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Passing data between controllers in Angular JS?
...roller('ProductController', function($scope, productService) {
$scope.callToAddToProductList = function(currObj){
productService.addProduct(currObj);
};
});
In your CartController, get the products from the service:
app.controller('CartController', function($scope, productService)...
How to configure port for a Spring Boot application
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Actually command line option is --server.port=8090 not -Dserver.port=8090. docs.spring.io/spring-boot/docs/current/reference/html/…
– Opster ES Ninja - Alper
Aug 19 '15 at 6:39
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How to do a safe join pathname in ruby?
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One thing to note. Ruby uses a "/" for file separator on all platforms, including Windows, so you don't actually need use different code for joining things together on different platforms. "C:/tmp/1.text" should work fine.
File.join() is your friend for joining paths together.
p...
When to use an assertion and when to use an exception
...andled during development, but not in production (when assertions are typically disabled)?
– herman
Sep 14 '13 at 14:09
72
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Node.js on multi-core machines
... rewrite URLs, serve static content, and proxy other sub-services.
Periodically recycle your worker processes. For a long-running process, even a small memory leak will eventually add up.
Setup log collection / monitoring
PS: There's a discussion between Aaron and Christopher in the comments of ...
What's the difference between .bashrc, .bash_profile, and .environment?
...or login at the text console of a local unix machine). these are the ones called, say, .login or .profile or .zlogin (depending on which shell you're using).
Then you have config files that are read by "interactive" shells (as in, ones connected to a terminal (or pseudo-terminal in the case of, say...
Java: how can I split an ArrayList in multiple small ArrayLists?
...ist are reflected in this list, and vice-versa. The returned list supports all of the optional list operations supported by this list.
Example:
List<Integer> numbers = new ArrayList<Integer>(
Arrays.asList(5,3,1,2,9,5,0,7)
);
List<Integer> head = numbers.subList(0, 4);
List...