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Use of alloc init instead of new
...
Very old question, but I've written some example just for fun — maybe you'll find it useful ;)
#import "InitAllocNewTest.h"
@implementation InitAllocNewTest
+(id)alloc{
NSLog(@"Allocating...");
return [super alloc];
}
-(id)init{
NSLog(@"Initializing...");
retur...
Espresso: Thread.sleep( );
...ained with other ViewInteractions:
/**
* Wait for view to be visible
*/
fun ViewInteraction.waitUntilVisible(timeout: Long): ViewInteraction {
val startTime = System.currentTimeMillis()
val endTime = startTime + timeout
do {
try {
check(matches(isDisplayed()))
...
Can I call a base class's virtual function if I'm overriding it?
... // ...
void printStuff() {
Foo::printStuff(); // calls base class' function
}
};
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How to copy a collection from one database to another in MongoDB
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You could do something like:
db.<collection_name>.find().forEach(function(d){ db.getSiblingDB('<new_database>')['<collection_name>'].insert(d); });
Please note that with this, the two databases would need to share the same mongod for this to work.
Besides this, you can do a...
Are +0 and -0 the same?
... Actually, this behavior models limit calculation in math. For example function 1/x has a value infinity in 0, however, it is separated if we are approaching 0 from the positive of negative side; in the former, the result is +inf, in the latter, -inf.
– Agoston Horvath
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Suppress warning messages using mysql from within Terminal, but password written in bash script
... edited Aug 4 at 7:44
coding is fun
35677 silver badges1515 bronze badges
answered Apr 8 '14 at 9:34
David Goo...
Can you have multiline HTML5 placeholder text in a ?
...getElementsByTagName('textarea');
Array.prototype.forEach.call(textAreas, function(elem) {
elem.placeholder = elem.placeholder.replace(/\\n/g, '\n');
});
<textarea class="textAreaMultiline"
placeholder="Hello, \nThis is multiline example \n\nHave Fun"
rows="5" cols="35"...
what is the basic difference between stack and queue?
... of the queue and when one leaves they leave from the front of the queue.
Fun fact: the British refer to lines of people as a Queue
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How to use JavaScript regex over multiple lines?
...egexes on HTML, though wiki syntaxes mixed with HTML can have all kinds of fun corner cases themselves.
– Brian Campbell
Jan 4 '10 at 14:56
2
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Test for equality among all elements of a single vector
...ing by the mean:
# Determine if range of vector is FP 0.
zero_range <- function(x, tol = .Machine$double.eps ^ 0.5) {
if (length(x) == 1) return(TRUE)
x <- range(x) / mean(x)
isTRUE(all.equal(x[1], x[2], tolerance = tol))
}
If you were using this more seriously, you'd probably want to...