大约有 40,000 项符合查询结果(耗时:0.0414秒) [XML]
Query an XDocument for elements by name at any depth
...he above code would result in an NPE. Maybe the .? from the new C# will finally make it valid
– Dror Harari
Sep 19 '15 at 0:43
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Mapping a function on the values of a map in Clojure
...I like this version because it's super short and obvious if you understand all the functions and such it uses. And if you don't it's an excuse to learn them!
– Runevault
Nov 5 '09 at 3:14
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How can you encode a string to Base64 in JavaScript?
... in 8 bits, it will probably break. This isn’t a problem if you’re actually treating the string as a byte array, but if you’re trying to do something else then you’ll have to encode it first.
atob() returns a “string” where each character represents an 8-bit byte – that is, its value w...
How to darken a background using CSS?
....png);
}
Reference: linear-gradient() - CSS | MDN
UPDATE: Not all browsers support RGBa, so you should have a 'fallback color'. This color will be most likely be solid (fully opaque) ex:background:rgb(96, 96, 96). Refer to this blog for RGBa browser support.
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Does every web request send the browser cookies?
...RL requested is within the same domain and path defined in the cookie (and all of the other restrictions -- secure, httponly, not expired, etc) hold, then the cookie will be sent for every request.
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Do I need to disable NSLog before release Application?
... get debug messages. When you're ready to release a beta or final release, all those DLog lines automatically become empty and nothing gets emitted. This way there's no manual setting of variables or commenting of NSLogs required. Picking your build target takes care of it.
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How do I do a not equal in Django queryset filtering?
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Your query appears to have a double negative, you want to exclude all rows where x is not 5, so in other words you want to include all rows where x IS 5. I believe this will do the trick.
results = Model.objects.filter(x=5).exclude(a=true)
To answer your specific question, there is no "...
How can I time a code segment for testing performance with Pythons timeit?
...r if you want to average the time elapsed by several runs, you have to manually call the function multiple times (As I think you already do in you example code and timeit does automatically when you set its number argument)
import time
def myfast():
code
n = 10000
t0 = time.time()
for i in ran...
Why does the C preprocessor interpret the word “linux” as the constant “1”?
Why does the C preprocessor in GCC interpret the word linux (small letters) as the constant 1 ?
5 Answers
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How to show all shared libraries used by executables in Linux?
...to know which libraries are used by executables on my system. More specifically, I'd like to rank which libraries are used the most, along with the binaries that use them. How can I do this?
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