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What’s the difference between “Array()” and “[]” while declaring a JavaScript array?
... sorts of extra steps to go to the global scope, look for the constructor, call the constructor and assign the result... which in the majority case is going to be a a runtime array. You can avoid the overhead of looking for the global constructor by just using []. It may seem small, but when you're ...
Efficient method to generate UUID String in JAVA (UUID.randomUUID().toString() without the dashes)
...at's wrong with UUID.randomUUID().toString() ? Also note that you (theoretically) decrease the entropy by holding a static final SecureRandom (make it volatile). also why synchronize the generateUniqueId? This means all your threads are blocked on this method.
– Maxim Veksler
...
Calling a base class's classmethod in Python
....new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f1269217%2fcalling-a-base-classs-classmethod-in-python%23new-answer', 'question_page');
}
);
Post as a guest
...
Why use @PostConstruct?
In a managed bean, @PostConstruct is called after the regular Java object constructor.
5 Answers
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Bind a function to Twitter Bootstrap Modal Close
... to use hide.bs.modal instead, which is fired as soon as .modal('hide') is called. getbootstrap.com/javascript/#modals-usage - See Events subsection.
– Evan Steinkerchner
Aug 11 '14 at 16:15
...
Stop UIWebView from “bouncing” vertically?
Does anyone know how to stop a UIWebView from bouncing vertically? I mean when a user touches their iphone screen, drags their finger downwards, and the webview shows a blank spot above the web page I had loaded?
...
What are deferred objects?
...
As of jQuery 1.5, the Deferred object provides a way to register multiple callbacks into self-managed callback queues, invoke callback queues as appropriate, and relay the success or failure state of any synchronous or asynchronous function.
Deferred Methods:
deferred.done()
Add handlers to be ca...
SQL injection that gets around mysql_real_escape_string()
... SET NAMES here. This sets the character set ON THE SERVER. If we used the call to the C API function mysql_set_charset(), we'd be fine (on MySQL releases since 2006). But more on why in a minute...
The Payload
The payload we're going to use for this injection starts with the byte sequence 0xbf27. ...
dplyr: “Error in n(): function should not be called directly”
... TRUE), col = as.name(g))
)
# Error in n() : This function should not be called directly
It can be solved as follows.
df %>%
group_by_(g) %>%
summarise_(
n = "n()",
sum = interp(~sum(col, na.rm = TRUE), col = as.name(g))
)
# A tibble: 3 × 3
# group n sum
# <dbl>...
Side-by-side plots with ggplot2
...
?grid.arrange makes me think that this function is now called arrangeGrob. I was able to do what I wanted by doing a <- arrangeGrob(p1, p2) and then print(a).
– blakeoft
Oct 1 '14 at 19:07
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