大约有 47,000 项符合查询结果(耗时:0.0868秒) [XML]
Big-O summary for Java Collections Framework implementations? [closed]
... read the fields for this comparison. The exceptions would be integers or strings (interned)???
– Overflown
Feb 18 '09 at 7:03
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How to prevent the activity from loading twice on pressing the button
...ivity
android:name=".MainActivity"
android:label="@string/activity"
android:launchMode = "singleInstance" />
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What is the difference between os.path.basename() and os.path.dirname()?
...ile name: here, 'foo.bar', and os.path.dirname(file_name) returns an empty string: ''.
– jkdev
Nov 26 '18 at 20:47
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Error in plot.new() : figure margins too large, Scatter plot
...lem with RStudio, and when I entered par("mar") I retrieved the same exact string [1] 5.1 4.1 4.1 2.1 so I entered par(mar=c(1,1,1,1)) but then plot() would not plot anything, so I had to close close both RStudio and the terminal. After reopening RStudio, it was back to normal.
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Git branching: master vs. origin/master vs. remotes/origin/master
...ointer to a branch" (the actual file in your local repo often contains the string ref: refs/heads/master, for instance ... unless it's "detached", which is another thing entirely). However, there's a bug of sorts in the way clone interprets the "remote HEAD": the transfer protocols can't send an in...
Changing the maximum length of a varchar column?
...olumn from 255 characters to 500 without losing the contents. I've dropped and re-created tables before but I've never been exposed to the alter statement which is what I believe I need to use to do this. I found the documentation here: ALTER TABLE (Transfact-SQL) however I can't make heads or tai...
What is the apply function in Scala?
...ed as a reference to Function1[Int,Int] object. For example, we can call toString method inherited from Any, that would have been impossible for a pure function, because functions don't have methods:
f.toString
Or we could define another Function1[Int,Int] object by calling compose method on f...
How to pass anonymous types as parameters?
...le<dynamic> list)
{
foreach (dynamic item in list)
{
string name = item.Name;
int id = item.Id;
}
}
Note that this is not strongly typed, so if, for example, Name changes to EmployeeName, you won't know there's a problem until runtime.
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How to access custom attributes from event object in React?
...ch? For example depending on what button the user pushes I want to pass a string to a function. I was hoping to avoid making three functions in my component for each case.
– Michael J. Calkins
Apr 10 '16 at 23:52
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error: ‘NULL’ was not declared in this scope
...
NULL can also be found in:
#include <string.h>
String.h will pull in the NULL from somewhere else.
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