英文: Pandas itertuples - fill in a matrix with a value based on an event 问题 import pandas as pd id = ...
Why do I get this error: _CastError (Null check operator used on a null value)
英文: Why do I get this error: _CastError (Null check operator used on a null value) 问题 我有一个类似这样的列: Co...
将if语句的条件赋给一个变量。
英文: assign the condition of the if statement to a variable 问题 我有一段很长的代码片段,我正在尝试缩短它。 现在我有这样的代码: statu...
Create a dummy variable based on two variables x1 and x2 (dummy=x1 only if at least one adjacent x2=yes)
英文: Create a dummy variable based on two variables x1 and x2 (dummy=x1 only if at least one adjacent...
使用R中的累积函数和嵌套条件来设置最小和最大值。
英文: In R use accumulate with nested conditions to set minimum and maximum 问题 我想创建一个新的列 y,该列将 x 添加到先前...
Extracting values from one raster based on condition in another raster and distinguished by polygons in a vector file
英文: Extracting values from one raster based on condition in another raster and distinguished by poly...
我在C中实现了这个排序程序。为什么它不起作用?
英文: I implement this sorting program in c . Why this is not working? 问题 The sorting program you prov...
Java中switch case引发空指针异常
英文: Java switch case throwing nullPointer Exception 问题 public enum Status { REQ("URL1"), N...
使用jq中的”or”运算符
英文: Use or operator in jq 问题 我正在使用jq来解析JSON。JSON中有一个名为"players[]"的数组,其中包含一个名为"name&qu...
Excel条件语句 – 2个单元格相等时,根据另一个单元格的值保留其中一个。
英文: Excel Conditional Statement - 2 cells equal keep 1 based on value of another 问题 以下是代码部分的翻译: =IF(...
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