大约有 42,000 项符合查询结果（耗时：0.0787秒） [XML]
How do I simulate a low bandwidth, high latency environment?
... follow
|
edited Nov 7 '19 at 18:13
answered Mar 12 '12 at 22:37
...
Why would an Enum implement an Interface?
...
Here's one example (a similar/better one is found in Effective Java 2nd Edition):
public interface Operator {
int apply (int a, int b);
}
public enum SimpleOperators implements Operator {
PLUS {
int apply(int a, int b) { return a + b; }
},
MINUS {
int apply(int...
How do you avoid over-populating the PATH Environment Variable in Windows?
...es
after which your original paths become
%P1%\subdir1;
%P1%\subdir2;
EDIT: Another option is to create a bin directory that holds .bat files that point to the appropriate .exe files.
EDIT 2: Ben Voigt's comment to another answer mentions that using other environment variables as suggested mig...
How to insert text at beginning of a multi-line selection in vi/Vim
... follow
|
edited Nov 24 '19 at 6:12
the Tin Man
147k3131 gold badges192192 silver badges272272 bronze badges
...
Change drawable color programmatically
... follow
|
edited Jun 4 '19 at 22:50
Alex Lockwood
80.3k3636 gold badges196196 silver badges242242 bronze badges
...
jquery .html() vs .append()
... jQuery will take a shortcut and simply do document.createElement('div').
EDIT: To see the sheer quantity of checks that jQuery performs, have a look here, here and here.
innerHTML is generally the faster approach, although don't let that govern what you do all the time. jQuery's approach isn't ...
How do I find files that do not contain a given string pattern?
... follow
|
edited Mar 4 '15 at 17:39
t0r0X
2,71611 gold badge2323 silver badges2424 bronze badges
...
IIS7 Permissions Overview - ApplicationPoolIdentity
...lick the file and select "Properties"
Select the "Security" tab
Click the "Edit" and then "Add" button
Click the "Locations" button and make sure you select the local machine. (Not the Windows domain if the server belongs to one.)
Enter "IIS AppPool\DefaultAppPool" in the "Enter the object names to ...
Counting DISTINCT over multiple columns
... follow
|
edited Jul 27 '16 at 19:18
Devil's Advocate
14.8k2828 gold badges9696 silver badges179179 bronze badges
...
Selecting only numeric columns from a data frame
...
EDIT: updated to avoid use of ill-advised sapply.
Since a data frame is a list we can use the list-apply functions:
nums <- unlist(lapply(x, is.numeric))
Then standard subsetting
x[ , nums]
## don't use sapply, e...