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How to retrieve an element from a set without removing it?
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answered Sep 12 '08 at 20:08
Blair ConradBlair Conrad
190k2424 gold badges124124 silver badges107107 bronze badges
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Java: Equivalent of Python's range(int, int)?
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answered Nov 27 '12 at 17:40
Simon SteeleSimon Steele
11.2k33 gold badges4141 silver badges6767 bronze badges
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What does new self(); mean in PHP?
...getInstance();
var_dump($a);
Here, you'll get :
object(MyChildClass)#1 (0) { }
Which means self means MyChildClass -- i.e. the class in which it is written.
For the second situation, the code would look like this :
class MyParentClass {
public static function getInstance() {
ret...
How to assign colors to categorical variables in ggplot2 that have stable mapping?
...al colour scale as follows:
#Some test data
dat <- data.frame(x=runif(10),y=runif(10),
grp = rep(LETTERS[1:5],each = 2),stringsAsFactors = TRUE)
#Create a custom color scale
library(RColorBrewer)
myColors <- brewer.pal(5,"Set1")
names(myColors) <- levels(dat$grp)
colScale <- sc...
change html text from link with jquery
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered May 23 '09 at 17:06
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App Inventor 2 UrsAI2UDP 拓展 - UDP广播通信协议 · App Inventor 2 中文网
...可以双向传输数据。
注意：
在 UNIX 系统上，系统保留 1023（含）以下的端口号。这些限制已保留用于 LINUX，因此也用于 Android。使用这些端口号需要 root 授权。这同样适用于 Apple 的 iOS。
因此，此扩展无法使用低于 1024 的端口...
How do I add more members to my ENUM-type column in MySQL?
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140
ALTER TABLE
`table_name`
MODIFY COLUMN
`column_name2` enum(
'existing_value1',
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Is it considered bad practice to perform HTTP POST without entity body?
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edited Jul 1 '19 at 11:03
Gerard Bosch
33211 gold badge22 silver badges1616 bronze badges
answered No...
How to make a new line or tab in XML (eclipse/android)?
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edited Mar 6 '17 at 10:27
aleksandrbel
1,19811 gold badge1616 silver badges3333 bronze badges
answe...
Convert any object to a byte[]
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201
Use the BinaryFormatter:
byte[] ObjectToByteArray(object obj)
{
if(obj == null)
re...