大约有 40,000 项符合查询结果（耗时：0.0645秒） [XML]
Base 64 encode and decode example code
...Charsets:
// Sending side
byte[] data = text.getBytes(StandardCharsets.UTF_8);
String base64 = Base64.encodeToString(data, Base64.DEFAULT);
// Receiving side
byte[] data = Base64.decode(base64, Base64.DEFAULT);
String text = new String(data, StandardCharsets.UTF_8);
...
What is a stored procedure?
...tatype>
AS
<Body>
So for example:
CREATE PROCEDURE Users_GetUserInfo
@login nvarchar(30)=null
AS
SELECT * from [Users]
WHERE ISNULL(@login,login)=login
A benefit of stored procedures is that you can centralize data access logic into a single place that is then eas...
How to access parent Iframe from JavaScript
...d Oct 10 '10 at 16:13
ingredient_15939ingredient_15939
2,78077 gold badges2727 silver badges4848 bronze badges
...
Changing UIImage color
...
Swift 4.2 Solution
extension UIImage {
func withColor(_ color: UIColor) -> UIImage {
UIGraphicsBeginImageContextWithOptions(size, false, scale)
guard let ctx = UIGraphicsGetCurrentContext(), let cgImage = cgImage else { return self }
color.setFill()
...
C++ lambda with captures as a function pointer
... @KerrekSB put the global variables in a namespace and mark them as thread_local, that's the ftw approach I chose for solving something similar.
– Kjell Hedström
Apr 21 '14 at 15:08
...
Using the Android Application class to persist data
...nController extends Application {
private static ApplicationController _appCtrl;
public static ApplicationController getAppCtrl()
{
return _appCtrl;
}
}
Because subclasses of Application also can obtain the Resources, you could access them simply when you define a static ...
Count number of occurrences of a pattern in a file (even on same line)
...color tags it prints out:
echo -e "a\nb b b\nc\ndef\nb e brb\nr" \
| GREP_COLOR="033" grep --color=always b \
| perl -e 'undef $/; $_=<>; s/\n//g; s/\x1b\x5b\x30\x33\x33/\n/g; print $_' \
| wc -l
share
|
...
Why is there extra padding at the top of my UITableView with style UITableViewStyleGrouped in iOS7
...h are misaligned (first cell with have a Y origin of 0.01, the next of cell_height+0.01, etc) so the contents of those cells will be misaligned. (Turn on Debug > Color Misaligned Images in the simulator to see this for yourself.) You don't want to do that.
– Simon Whitaker
...
How to use mongoimport to import csv
...ecting to: test
> use mydb
switched to db mydb
> db.things.find()
{ "_id" : ObjectId("4d32a36ed63d057130c08fca"), "Name" : "Jane Doe", "Address" : "123 Main St", "City" : "Whereverville", "State" : "CA", "ZIP" : 90210 }
{ "_id" : ObjectId("4d32a36ed63d057130c08fcb"), "Name" : "John Doe", "Addr...
Quickly reading very large tables as dataframes
...rom csv/tab-delimited files directly into R. See mnel's answer.
Using read_table in readr (on CRAN from April 2015). This works much like fread above. The readme in the link explains the difference between the two functions (readr currently claims to be "1.5-2x slower" than data.table::fread).
r...