大约有 6,500 项符合查询结果（耗时：0.0311秒） [XML]
Check if a method exists
...j respondsToSelector:@selector(methodName:withEtc:)]) {
[obj methodName:123 withEtc:456];
}
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How can I ask the Selenium-WebDriver to wait for few seconds in Java?
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123
Well, there are two types of wait: explicit and implicit wait.
The idea of explicit wait is
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Array versus List: When to use which?
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123
Really just answering to add a link which I'm surprised hasn't been mentioned yet: Eric's Lipp...
ViewPager with Google Maps API v2: mysterious black view
...lution, they work while the app is in the foreground but when the app is closed and still running and you go back to it the map stays on top still..
– L7ColWinters
Feb 8 '13 at 0:20
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Format decimal for percentage values?
...complete example:
using System.Globalization;
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decimal myValue = -0.123m;
NumberFormatInfo percentageFormat = new NumberFormatInfo { PercentPositivePattern = 1, PercentNegativePattern = 1 };
string formattedValue = myValue.ToString("P2", percentageFormat); // "-12.30%" (in en-us)
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Delete specific line number(s) from a text file using sed?
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Same here, I wrote a loop and strangely some files lost the correct line but some files lost one other line too, have no clue what went wrong. (GNU/Linux bash4.2) awk command below worked fine in loop
– FatihSarigol
Oct 5 '18 at 8:28
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How can I redirect HTTP requests made from an iPad?
Since on an iPad we cannot edit the hosts file (without jailbreaking), how can we arbitrarily redirect web traffic to another url?
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How to dynamically create CSS class in JavaScript and apply?
...ate dynamic css stylesheets.
$.injectCSS({
"#test": {
height: 123
}
});
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Java: int array initializes with nonzero elements
According to the JLS, an int array should be filled by zeros just after initialization. However, I am faced with a situation where it is not. Such a behavior occurs first in JDK 7u4 and also occurs in all later updates (I use 64-bit implementation). The following code throws exception:
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What is the difference between task and thread?
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A task is something you want done.
A thread is one of the many possible workers which performs that task.
In .NET 4.0 terms, a Task represents an asynchronous operation. Thread(s) are used to complete that operation by breaking the work up into chunks and assigning to separate threads.
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