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Build tree array from flat array in javascript
...ibrary. It's, as far as I can tell, the fastest solution.
function list_to_tree(list) {
var map = {}, node, roots = [], i;
for (i = 0; i < list.length; i += 1) {
map[list[i].id] = i; // initialize the map
list[i].children = []; // initialize the children
}
for (i = 0; i ...
How can I produce an effect similar to the iOS 7 blur view?
...irect link: https://developer.apple.com/downloads/download.action?path=wwdc_2013/wwdc_2013_sample_code/ios_uiimageeffects.zip
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Event handling for iOS - how hitTest:withEvent: and pointInside:withEvent: are related?
...eturn self;
}
return nil;
}
Edit Swift 4:
override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
if self.point(inside: point, with: event) {
return super.hitTest(point, with: event)
}
guard isUserInteractionEnabled, !isHidden, alpha > 0 else {...
Recursive lambda functions in C++11
...r, not by capture.
const auto sum = [term,next](int a, int b) {
auto sum_impl=[term,next](int a,int b,auto& sum_ref) mutable {
if(a>b){
return 0;
}
return term(a) + sum_ref(next(a),b,sum_ref);
};
return sum_impl(a,b,sum_impl);
};
All problems in computer science can...
namespaces for enum types - best practices
...m
{
Red,
Blue,
Green,
Yellow
} enum_type;
private:
enum_type _val;
public:
Color(enum_type val = Blue)
: _val(val)
{
assert(val <= Yellow);
}
operator enum_type() const
{
return _val;
}
};
void SetPenC...
Disable all table constraints in Oracle
...m SQL*Plus or put this thing into a package or procedure. The join to USER_TABLES is there to avoid view constraints.
It's unlikely that you really want to disable all constraints (including NOT NULL, primary keys, etc). You should think about putting constraint_type in the WHERE clause.
BEGIN
...
How do I merge a git tag onto a branch
...
You mean this?
git checkout destination_branch
git merge tag_name
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How do I use NSTimer?
...ewController
double timerInterval = 1.0f;
- (NSTimer *) timer {
if (!_timer) {
_timer = [NSTimer timerWithTimeInterval:timerInterval target:self selector:@selector(onTick:) userInfo:nil repeats:YES];
}
return _timer;
}
- (void)viewDidLoad
{
[super viewDidLoad];
[[NSRu...
Applying a function to every row of a table using dplyr?
...f Hadley's examples using pmap:
iris %>%
mutate(Max.Len= purrr::pmap_dbl(list(Sepal.Length, Petal.Length), max))
Using this approach, you can give an arbitrary number of arguments to the function (.f) inside pmap.
pmap is a good conceptual approach because it reflects the fact that when ...
Where in an Eclipse workspace is the list of projects stored?
...d up fixing these files in place with (D:->F:) sfk replace -pat -binary _5552492F2F66696C653A2F443A2F_5552492F2F66696C653A2F463A2F_ -dir .metadata\.plugins\org.eclipse.core.resources\.projects -file .location
– mgaert
Oct 2 '14 at 12:10
...