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LINQ order by null column where order is ascending and nulls should be last
... edited Aug 21 '13 at 18:35
abc123
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answered Jun 23 '11 at 22:52
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How to convert an NSString into an NSNumber
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For strings starting with integers, e.g., @"123", @"456 ft", @"7.89", etc., use -[NSString integerValue].
So, @([@"12.8 lbs" integerValue]) is like doing [NSNumber numberWithInteger:12].
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Join a list of items with different types as string in Python
...o combine list into a single string
a = map(str, a)
''.join(a)
'123'
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'npm' is not recognized as internal or external command, operable program or batch file
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123
Don't forget to reboot your computer after installing node! That one got me.
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Is there a way to perform “if” in python's lambda
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David WoleverDavid Wolever
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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...
How do you check if a certain index exists in a table?
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AdaTheDevAdaTheDev
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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...