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Does async(launch::async) in C++11 make thread pools obsolete for avoiding expensive thread creation
...s under the impression that Linux thread creation was very cheap and after testing I determined that the overhead of function call in a new thread vs. a normal one is enormous. The overhead for creating a thread to handle a function call is something like 10000 or more times slower than a plain func...
What are all the uses of an underscore in Scala?
...ses of the underscore is Scala _ [underscore] magic.
Examples:
def matchTest(x: Int): String = x match {
case 1 => "one"
case 2 => "two"
case _ => "anything other than one and two"
}
expr match {
case List(1,_,_) => " a list with three element and the first elem...
Specifying colClasses in the read.csv
...nly one columns.
So in your example you should use:
data <- read.csv('test.csv', colClasses=c("time"="character"))
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Update value of a nested dictionary of varying depth
...! I figured someone would would have a better way to handle the isinstance test, but thought I'd take a stab at it.
– FMc
Jul 13 '10 at 2:58
7
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Local Storage vs Cookies
...astructure. Modern web apps include 3rd party JavaScript libraries for A/B testing, funnel/market analysis, and ads. We use package managers like Bower to import other peoples’ code into our apps.
What if only one of the scripts you use is compromised? Malicious
JavaScript can be embedded o...
HTML5 Local storage vs. Session storage
...
i tested this on Chrome v41.x and it seems that the above statement about https is not true: localStorage retains its stored data.
– CCC
Apr 10 '15 at 19:02
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Easy way to test a URL for 404 in PHP?
...ork though it is not in the standard get_headers() function.. Feel free to test it and respond with a status for it.
– JamesM-SiteGen
Feb 6 '11 at 5:07
1
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jQuery selector regular expressions
...nswer and is susceptible to link rot. Additionally, I found two bugs while testing the code - it will drop commas from regular expressions containing them (solved by replacing matchParams.join('') with matchParams.join(',')), and any pattern that matches 'undefined' or 'null' will match undefined an...
Send file using POST from a Python script
...
From: https://requests.readthedocs.io/en/latest/user/quickstart/#post-a-multipart-encoded-file
Requests makes it very simple to upload Multipart-encoded files:
with open('report.xls', 'rb') as f:
r = requests.post('http://httpbin.org/post', files={'report.xls': ...
Hamcrest compare collections
...e... If actual.getList() happens to contain "item1", "item3", "item2", the test will pass and maybe you want to make sure it only contains the items listed... In that case you could use assertThat(actual.getList().size(), equalTo(2)); before the containsInAnyOrder, this way you make sure both lists ...