大约有 47,000 项符合查询结果（耗时：0.0510秒） [XML]
How to find index of list item in Swift?
I am trying to find an item index by searching a list . Does anybody know how to do that?
22 Answers
...
Why can I access private variables in the copy constructor?
...references back to parent/coordination/management objects that might be unknown or write-only for the client code
share
|
improve this answer
|
follow
|
...
Loop through files in a directory using PowerShell
...
not sure what I'm doing wrong but this is not working - I now get no output files (and no errors): $files = Get-ChildItem "C:\Users\gerhardl\Documents\My Received Files\" $files | Where-Object { $outFile = $_.Name + "out" Get-Content $_.FullName | Where-Object { ...
PreparedStatement with list of parameters in a IN clause [duplicate]
...the select string (the 'IN (?)' part) by a simple for loop as soon as you know how many values you need to put inside the IN clause. You can then instantiate the PreparedStatement.
share
|
improve t...
Java optional parameters
...null ? b : 0;
c = c != null ? c : 0;
//...
}
foo("a", null, 2);
Now all arguments values must be provided, but the default ones may be null.
Optional class. This approach is similar to nulls, but uses Java 8 Optional class for parameters that have a default value:
void foo(String a, Opti...
When should one use final for method parameters and local variables?
...that affects the immutability.)
Final static fields - Although I use enums now for many of the cases where I used to use static final fields.
Consider but use judiciously:
Final classes - Framework/API design is the only case where I consider it.
Final methods - Basically same as final classes. ...
Populating a ListView using an ArrayList?
... //let me assume that you are putting the values in this arraylist
//Now convert your arraylist to array
//You will get an exmaple here
//http://www.java-tips.org/java-se-tips/java.lang/how-to-convert-an-arraylist-into-an-array.html
private String arr[]=convert(arrlist);
@O...
Convert RGB to RGBA over white
... input values and r', g', b', and a' be the output values, all scaled (for now, as it makes the math prettier) between 1 and 0. Then, by the formula for overlaying colors:
r = a' * r' + 1 - a'
g = a' * g' + 1 - a'
b = a' * b' + 1 - a'
The 1 - a' terms represent the background contribution, and th...
After array_filter(), how can I reset the keys to go in numerical order starting at 0
...ray_filter to remove entries that had only the value '' from an array, and now I want to apply certain transformations on it depending on the placeholder starting from 0, but unfortunately it still retains the original index. I looked for a while and couldn't see anything, perhaps I just missed the...
How to undo 'git reset'?
...ned by checking out a particular commit (though that's not important right now). So, to undo the reset, run git reset HEAD@{1} (or git reset d27924e).
If, on the other hand, you've run some other commands since then that update HEAD, the commit you want won't be at the top of the list, and you'll n...