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Understanding Linux /proc/id/maps
... changed using the mprotect system call.
offset - If the region was mapped from a file (using mmap), this is the offset in the file where the mapping begins. If the memory was not mapped from a file, it's just 0.
device - If the region was mapped from a file, this is the major and minor device numbe...
Difference between static class and singleton pattern?
...h of static methods is that singletons can implement interfaces (or derive from useful base classes, although that's less common, in my experience), so you can pass around the singleton as if it were "just another" implementation.
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How to avoid long nesting of asynchronous functions in Node.js
I want to make a page that displays some data from a DB, so I have created some functions that get that data from my DB. I'm just a newbie in Node.js, so as far as I understand, if I want to use all of them in a single page (HTTP response) I'd have to nest them all:
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How to compare two revisions in Bitbucket?
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I just tried this with two commits from the tortoisehg project and it still appears to work. Here is an example link: bitbucket.org/tortoisehg/thg/branches/compare/…
– Night Owl
Nov 5 '17 at 18:39
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How do I determine whether my calculation of pi is accurate?
...ula is needed.
An additional step is needed to verify the radix conversion from binary to decimal.
I've glossed over some details of why verifying the last few digits implies that all the digits are correct. But it is easy to see this since any computation error will propagate to the last digits.
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How to pretty print XML from Java?
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Here's an answer to my own question. I combined the answers from the various results to write a class that pretty prints XML.
No guarantees on how it responds with invalid XML or large documents.
package ecb.sdw.pretty;
import org.apache.xml.serialize.OutputFormat;
import org.apach...
Redirecting to a certain route based on condition
...Use $locationChangeStart instead of $routeChangeStart to prevent the route from getting called and letting unauthenticated users view content they shouldn't have access to.
– sonicboom
May 31 '13 at 21:44
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How to manually set an authenticated user in Spring Security / SpringMVC
...ssword, HttpServletRequest request) {
try {
// Must be called from request filtered by Spring Security, otherwise SecurityContextHolder is not updated
UsernamePasswordAuthenticationToken token = new UsernamePasswordAuthenticationToken(username, password);
token.setDetail...
How to handle static content in Spring MVC?
...beans.factory.xml.XmlBeanDefinitionStoreException: Line 31 in XML document from class path resource [META-INF/spring/application-context.xml] is invalid; nested exception is org.xml.sax.SAXParseException; lineNumber: 31; columnNumber: 35; cvc-complex-type.2.4.c: The matching wildcard is strict, but ...
Find object by id in an array of JavaScript objects
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Use the find() method:
myArray.find(x => x.id === '45').foo;
From MDN:
The find() method returns the first value in the array, if an element in the array satisfies the provided testing function. Otherwise undefined is returned.
If you want to find its index instead, use findInd...