大约有 44,600 项符合查询结果（耗时：0.0475秒） [XML]
Checking the equality of two slices
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Stephen WeinbergStephen Weinberg
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Patterns for handling batch operations in REST web services?
...o delete several messages at once.
DELETE /mail?&id=0&id=1&id=2
It's a little more complicated to batch update partial resources, or resource attributes. That is, update each markedAsRead attribute. Basically, instead of treating the attribute as part of each resource, you treat it as...
Converting NSString to NSDate (and back again)
How would I convert an NSString like " 01/02/10 " (meaning 1st February 2010) into an NSDate ? And how could I turn the NSDate back into a string?
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How to get row from R data.frame
...is, for example:
#Add your data
x <- structure(list(A = c(5, 3.5, 3.25, 4.25, 1.5 ),
B = c(4.25, 4, 4, 4.5, 4.5 ),
C = c(4.5, 2.5, 4, 2.25, 3 )
),
.Names = c("A", "B", "C"),
class = "da...
Script to get the HTTP status code of a list of urls?
...curl -o /dev/null --silent --head --write-out '%{http_code}\n' <url>
200
-o /dev/null throws away the usual output
--silent throws away the progress meter
--head makes a HEAD HTTP request, instead of GET
--write-out '%{http_code}\n' prints the required status code
To wrap this up in a com...
What is the difference between the Facade and Adapter Pattern?
...
142
The Facade Pattern wiki page has a brief note about this.
"An Adapter is used when the wra...
Generator Expressions vs. List Comprehension
...
294
John's answer is good (that list comprehensions are better when you want to iterate over somet...
How to trim leading and trailing white spaces of a string?
...
269
For example,
package main
import (
"fmt"
"strings"
)
func main() {
s := "\t Hel...
What does .SD stand for in data.table in R
...
206
.SD stands for something like "Subset of Data.table". There's no significance to the initial "...
How to print the full traceback without halting the program?
...in some corner cases, you will not obtain what you would expect. In Python 2.x:
import traceback
try:
raise TypeError("Oups!")
except Exception, err:
try:
raise TypeError("Again !?!")
except:
pass
traceback.print_exc()
...will display the traceback of the last ex...