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How should I use try-with-resources with JDBC?
... = new PreparedStatementWrapper(con, query,
new Object[] { 123L, "TEST" }) {
@Override
protected void prepareStatement(Object... params) throws SQLException {
stat.setLong(1, Long.class.cast(params[0]));
stat.setString(2, String...
Regex that accepts only numbers (0-9) and NO characters [duplicate]
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In Javascript this is allowing the value 123-456 (\d)*$
– theB3RV
Feb 20 '17 at 15:39
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C# convert int to string with padding zeros?
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Simply
int i=123;
string paddedI = i.ToString("D4");
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What's the fastest way to merge/join data.frames in R?
...bases as well.
library(plyr)
library(data.table)
library(sqldf)
set.seed(123)
N <- 1e5
d1 <- data.frame(x=sample(N,N), y1=rnorm(N))
d2 <- data.frame(x=sample(N,N), y2=rnorm(N))
g1 <- sample(1:1000, N, replace = TRUE)
g2<- sample(1:1000, N, replace = TRUE)
d <- data.frame(d1, g1,...
In Java, what is the best way to determine the size of an object?
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123
You should use jol, a tool developed as part of the OpenJDK project.
JOL (Java Object Layo...
Reference: Comparing PHP's print and echo
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echo 125;
ECHO 125
multi-value echo compiles to multiple opcodes
echo 123, 456;
ECHO 123
ECHO 456
Note that multi-value echo doesn't concatenate its arguments, but outputs them one-by-one.
Reference: zend_do_print, zend_do_echo.
Runtime differences
ZEND_PRINT is implemented as follows (ps...
App Inventor 2 ECharts 拓展:基于 ECharts 强大的个性化数据图表展示 · ...
...页
资源下载
.aix 拓展下载:
cn.fun123.ECharts.aix
demo程序下载:
echats_demo.aia
注:2个拓展是共一个.aix拓展文件,里面分2个拓展组件,导入.aix效果如下:
ECharts.js 图表库非常的丰富,只有你想不到没有...
App Inventor 2 Markdown 自研拓展:Markdown 格式渲染、转换为HTML、生成...
... 拓展下载
.aix 最新拓展下载:
cn.fun123.Markdown.aix
您的改进建议 联系方式: 不需要回复的可留空~ 意见反馈(300字以内): 给个鼓励也行呐~o~ ...
AI2Utils 拓展:一些常用的小功能集合 · App Inventor 2 中文网
...
一些常用的小功能集合。
.aix 拓展下载:
cn.fun123.AI2Utils.aix
属性
无
事件
无
方法
FindContactsByName(name,fuzzyMatch)
通过姓名查找通讯录,返回 (联系人,手机号) 的...
FlashLight 拓展:打开/关闭手机手电筒/闪光灯 · App Inventor 2 中文网
...打开/关闭手机手电筒/闪光灯。
.aix 拓展下载:
cn.fun123.FlashLight.aix
属性
无
事件
无
方法
IsOn()
获取手电筒当前状态
Off()
关闭手电筒
On()
打开手电筒
Toggl...
