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Is there any Rails function to check if a partial exists?
...or a partial (you can omit this argument if you want a regular template).
http://api.rubyonrails.org/classes/ActionView/LookupContext/ViewPaths.html#method-i-template_exists-3F
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Does C++ support 'finally' blocks? (And what's this 'RAII' I keep hearing about?)
...the code can get complicated.
A more detailed analysis can be found here: http://accu.org/index.php/journals/236
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How to open a new tab using Selenium WebDriver?
...selenium-webdriver'
driver = Selenium::WebDriver.for :firefox
driver.get('http://stackoverflow.com/')
body = driver.find_element(:tag_name => 'body')
body.send_keys(:control, 't')
driver.quit
Python
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
driver = web...
Why is it string.join(list) instead of list.join(string)?
...n the string class, instead of the list class?
I agree it looks funny.
See http://www.faqs.org/docs/diveintopython/odbchelper_join.html:
Historical note. When I first learned
Python, I expected join to be a method
of a list, which would take the
delimiter as an argument. Lots of
people feel the sam...
JSONP with ASP.NET Web API
...d to go with an JQuery AJAX call that looks like this:
$.ajax({
url: 'http://myurl.com',
type: 'GET',
dataType: 'jsonp',
success: function (data) {
alert(data.MyProperty);
}
})
It seems to work very well.
...
_DEBUG vs NDEBUG
... this standard as standard C) in "4.2 DIAGNOSTICS" section it was said
http://port70.net/~nsz/c/c89/c89-draft.html
If NDEBUG is defined as a macro name at the point in the source file
where is included, the assert macro is defined simply as
#define assert(ignore) ((void)0)
If lo...
Hidden features of C
...iltin_expect((x),1)
#define unlikely(x) __builtin_expect((x),0)
see: http://kerneltrap.org/node/4705
What I like about this is that it also adds some expressiveness to some functions.
void foo(int arg)
{
if (unlikely(arg == 0)) {
do_this();
return;
}
do_t...
Are types like uint32, int32, uint64, int64 defined in any stdlib header?
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How can I open a link in a new window?
...
you will need to use window.open(url);
references:
http://www.htmlcodetutorial.com/linking/linking_famsupp_120.html
http://www.w3schools.com/jsref/met_win_open.asp
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Logical operators for boolean indexing in Pandas
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