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javax.faces.application.ViewExpiredException: View could not be restored
...he session cookie is not maintained anymore for some reason in browser, or by calling HttpSession#invalidate() in server, or due a server specific bug with session cookies as known in WildFly), then the serialized view state is not available anymore in the session and the enduser will get this excep...
How are software license keys generated?
...emember that it only took about five minutes to "brute force" the verifier by mashing on the keypad and trying again.
– fmark
Jun 20 '10 at 23:33
18
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What are the benefits to marking a field as `readonly` in C#?
...t from other types of read-only semantics because it's enforced at runtime by the CLR. The readonly keyword compiles down to .initonly which is verifiable by the CLR.
The real advantage of this keyword is to generate immutable data structures. Immutable data structures by definition cannot be ch...
Examples of Algorithms which has O(1), O(n log n) and O(log n) complexities
...h every iteration
O(n log n) time
The factor of 'log n' is introduced by bringing into consideration Divide and Conquer. Some of these algorithms are the best optimized ones and used frequently.
Merge Sort
Heap Sort
Quick Sort
Certain Divide and Conquer Algorithms based on optimizing O(n^2) a...
Why do all browsers' user agents start with “Mozilla/”?
...eeps its original name .
Internet Explorer is released. It spoofs Netscape by starting its User-Agent with Mozilla/ because web servers were routinely browser sniffing and serving pages with frames - a feature supported by both Netscape and IE, but not other browsers of the era - to Netscape only.
O...
How to get Maven project version to the bash command line
...something for this:
help:evaluate evaluates Maven expressions given by the user in an interactive mode.
Here is how you would invoke it on the command line to get the ${project.version}:
mvn org.apache.maven.plugins:maven-help-plugin:2.1.1:evaluate \
-Dexpression=project.version
...
Go build: “Cannot find package” (even though GOPATH is set)
...just fine.
Additional recommended steps:
Add $GOPATH/bin to your $PATH by: PATH="$GOPATH/bin:$PATH"
Move main.go to a subfolder of $GOPATH/src, e.g. $GOPATH/src/test
go install test should now create an executable in $GOPATH/bin that can be called by typing test into your terminal.
...
Finding most changed files in Git
... package) command which shows statistics about how many commits per files (by commits and active days).
EDIT: git effort is just a bash script you can find here and adapt to your needs if you need something more special.
sh...
What is a WeakHashMap and when to use it? [duplicate]
...
Elements in a weak hashmap can be reclaimed by the garbage collector if there are no other strong references to the key object, this makes them useful for caches/lookup storage.
Weak reference are not restricted to these hash tables, you can use WeakReference for sing...
Explode PHP string by new line
...
this php function explode string by newline
Attention : new line in Windows is \r\n and in Linux and Unix is \n
this function change all new lines to linux mode then split it.pay attention that empty lines will be ignored
function splitNewLine($text) {
...