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How to flatten tree via LINQ?
...lt;T>> f
) => e.SelectMany(c => f(c).Flatten(f)).Concat(e);
Call this function like this:
IEnumerable<MyNode> tree = ....
var res = tree.Flatten(node => node.Elements);
If you would prefer flattening in pre-order rather than in post-order, switch around the sides of the Con...
How to replace all occurrences of a string?
...
Update: As of August 2020, you can use replaceAll
as shown here:
let result = "1 abc 2 abc 3".replaceAll("abc", "xyz");
// `result` is "1 xyz 2 xyz 3"
For older browsers:
Note: Don't use the following solution in performance critical code.
As an alternative to regular ...
Can a class member function template be virtual?
...
Templates are all about the compiler generating code at compile-time. Virtual functions are all about the run-time system figuring out which function to call at run-time.
Once the run-time system figured out it would need to call a templ...
Rails select helper - Default selected value, how?
... edited Jul 23 '16 at 4:13
installero
6,73333 gold badges2828 silver badges3030 bronze badges
answered Mar 12 '10 at 17:10
...
What is the difference between graph search and tree search?
...e Search
open <- []
next <- start
while next is not goal {
add all successors of next to open
next <- select one node from open
remove next from open
}
return next
Depending on how you implement select from open, you obtain different variants of search algorithms, like dept...
Reverting to a specific commit based on commit id with Git? [duplicate]
...ou can add "tags" to your repo.. and then go back to a tag. But a tag is really just a shortcut to the sha1.
You can tag this as TAG1.. then a git reset --soft c14809fa, git reset --soft TAG1, or git reset --soft c14809fafb08b9e96ff2879999ba8c807d10fb07 would all do the same thing.
...
How to open the Google Play Store directly from my Android application?
...lock here because an Exception will be thrown if the Play Store is not installed on the target device.
NOTE: any app can register as capable of handling the market://details?id=<appId> Uri, if you want to specifically target Google Play check the Berťák answer
...
Is it safe to use Project Lombok? [closed]
...tations and even simple JavaBean like generation with @Data . It could really help me, especially in 50 different event objects where you have up to 7 different fields that need to be constructed and hidden with getters. I could remove almost a thousand lines of code with this.
...
Using str_replace so that it only acts on the first match?
...
There's no version of it, but the solution isn't hacky at all.
$pos = strpos($haystack, $needle);
if ($pos !== false) {
$newstring = substr_replace($haystack, $replace, $pos, strlen($needle));
}
Pretty easy, and saves the performance penalty of regular expressions.
Bonus: If...
Is there a way to list task dependencies in Gradle?
...
you can use the --all flag to get a more detailed listing of the available tasks and the task dependencies
gradle tasks --all
EDIT: as noted by Radim in the comments, this command does not report dependencies, for gradle 3.3 and newer (see ...