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Remove duplicated rows
...for larger data sets
library(microbenchmark)
library(data.table)
set.seed(123)
DF <- as.data.frame(matrix(sample(1e8, 1e5, replace = TRUE), ncol = 10))
DT <- copy(DF)
setDT(DT)
microbenchmark(unique(DF), unique(DT))
# Unit: microseconds
# expr min lq mean median ...
How do I pre-populate a jQuery Datepicker textbox with today's date?
...k and doesn't make jQuery search the DOM twice.
– abc123
Aug 1 '13 at 20:36
1
Great, accepted ans...
App Inventor 2 LLMAI2Ext 自研拓展：接入DeepSeek、Kimi、通义千问...等国...
... 拓展下载，免费开放
.aix 拓展下载：
cn.fun123.LLMAI2Ext.aix - v1.0
注：所有大模型拓展共一个.aix拓展文件，里面有多个拓展组件，导入.aix效果参考如下：
回答效果参考如下：
我们尽量将接口方法设计得简单易用...
Upload artifacts to Nexus, without Maven
...
98
Have you considering using the Maven command-line to upload files?
mvn deploy:deploy-file \
...
How do you check if a certain index exists in a table?
...
AdaTheDevAdaTheDev
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...
Are Javascript arrays sparse?
...0, 81, 82, 83,
84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
96, 97, 98, 99,
... 16777116 more items
]
> console.log(`The script is using approximately ${Math.round(process.memoryUsage().heapUsed / 1024 / 1024 * 100) / 100} MB`);
The script is using approximately 819.94 MB
undefined
Bec...
How can I parse a YAML file from a Linux shell script?
...
98
I've written shyaml in python for YAML query needs from the shell command line.
Overview:
$ p...
Simple regular expression for a decimal with a precision of 2
...e
deci_num_checker = re.compile(r"""^[0-9]+(\.[0-9]{1,2})?$""")
valid = ["123.12", "2", "56754", "92929292929292.12", "0.21", "3.1"]
invalid = ["12.1232", "2.23332", "e666.76"]
assert len([deci_num_checker.match(x) != None for x in valid]) == len(valid)
assert [deci_num_checker.match(x) == None fo...
How do I replace a git submodule with another repo?
...
123
If the location (URL) of the submodule has changed, then you can simply:
Modify your .gitmod...
Is there a minlength validation attribute in HTML5?
...answered Apr 24 '12 at 8:24
user123444555621user123444555621
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...