大约有 44,000 项符合查询结果（耗时：0.0300秒） [XML]
iterating over and removing from a map [duplicate]
...g> map = new HashMap<String, String>() {
{
put("test", "test123");
put("test2", "test456");
}
};
for(Iterator<Map.Entry<String, String>> it = map.entrySet().iterator(); it.hasNext(); ) {
Map.Entry<String, String> entry = it.next();
if(entry.getKey().eq...
How to get function parameter names/values dynamically?
...
123
Below is the code taken from AngularJS which uses the technique for its dependency injection m...
Hidden Features of Visual Studio (2005-2010)?
...
123
votes
Make a selection with ALT pressed - selects a square of text instead of who...
How do I verify/check/test/validate my SSH passphrase?
...
123
You can verify your SSH key passphrase by attempting to load it into your SSH agent. With Open...
Get current batchfile directory
...
123
Very simple:
setlocal
cd /d %~dp0
File.exe
...
Set the location in iPhone Simulator
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123
As of iOS 5, the simulator has a configurable location.
Under the Debug menu, the last entry ...
ImportError: No module named apiclient.discovery
...
123
apiclient was the original name of the library.
At some point, it was switched over to be goog...
Match multiline text using regular expression
...ntire string.
Pattern p = Pattern.compile("xyz");
Matcher m = p.matcher("123xyzabc");
System.out.println(m.find()); // true
System.out.println(m.matches()); // false
Matcher m = p.matcher("xyz");
System.out.println(m.matches()); // true
Furthermore, MULTILINE doesn't mean what you think it d...
Remove duplicated rows
...for larger data sets
library(microbenchmark)
library(data.table)
set.seed(123)
DF <- as.data.frame(matrix(sample(1e8, 1e5, replace = TRUE), ncol = 10))
DT <- copy(DF)
setDT(DT)
microbenchmark(unique(DF), unique(DT))
# Unit: microseconds
# expr min lq mean median ...
c++11 Return value optimization or move? [duplicate]
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123
All return values are either already moved or optimized out, so there is no need to explicitly...