大约有 48,000 项符合查询结果（耗时：0.0443秒） [XML]
Why can't decimal numbers be represented exactly in binary?
...g point can be exactly represented.
Let's look at it another way - in base 10 which you're likely to be comfortable with, you can't express 1/3 exactly. It's 0.3333333... (recurring). The reason you can't represent 0.1 as a binary floating point number is for exactly the same reason. You can represe...
Determine if $.ajax error is a timeout
...l: "/ajax_json_echo/",
type: "GET",
dataType: "json",
timeout: 1000,
success: function(response) { alert(response); },
error: function(xmlhttprequest, textstatus, message) {
if(textstatus==="timeout") {
alert("got timeout");
} else {
alert(...
Why does parseInt yield NaN with Array#map?
...e as not supplying the parameter, so it defaulted based on the input (base 10, in this case). Base 1 is an impossible number base, and 3 is not a valid number in base 2:
parseInt('1', 0); // OK - gives 1
parseInt('2', 1); // FAIL - 1 isn't a legal radix
parseInt('3', 2); // FAIL - 3 isn't legal in...
Why was the arguments.callee.caller property deprecated in JavaScript?
... |
edited May 1 '14 at 19:10
Pacerier
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answ...
Rollback a Git merge
...|
edited May 23 '17 at 12:10
Community♦
111 silver badge
answered Jul 30 '12 at 13:32
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Ask for User Permission to Receive UILocalNotifications in iOS 8
...7
KPMKPM
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...
Override back button to act like home button
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10 Answers
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How to tell if a file is git tracked (by shell exit code)?
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answered Mar 9 '10 at 5:12
hasenhasen
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Numpy: Get random set of rows from 2D array
...
>>> A = np.random.randint(5, size=(10,3))
>>> A
array([[1, 3, 0],
[3, 2, 0],
[0, 2, 1],
[1, 1, 4],
[3, 2, 2],
[0, 1, 0],
[1, 3, 1],
[0, 4, 1],
[2, 4, 2],
[3, 3, 1]])
>>> idx = np....
Multiprocessing - Pipe vs Queue
...sts using Pipe() and Queue()... This is on a ThinkpadT61 running Ubuntu 11.10, and Python 2.7.2.
FYI, I threw in results for JoinableQueue() as a bonus; JoinableQueue() accounts for tasks when queue.task_done() is called (it doesn't even know about the specific task, it just counts unfinished tasks...