import pandas as pd import pickle import numpy as np dates = pd.date_range() df = pd.DataFrame(np.arange().reshape((,)), index=dates, columns=['A', 'B', 'C', 'D']) print(df) #单点设置 df.iloc[,] = df.loc[ print(df) 输出: A B C D -- -- -- -- -- -- A B C D -
Function ISFORMULA(ByVal rg As Object) As Variant Dim temp As Variant Dim i As Integer, j As Integer temp = rg.Formula If IsArray(temp) Then For i = 1 To UBound(temp, 1) For j = 1 To UBound(temp, 2)
1.字符串参与判断时:非空即为真判断字符串为空的方法if(str!=null && str!=undefined && str !='')可简写为if(!str){ console.log(str)}2.数字参与if判断:非0非NAN即为真 var i = 0;if(i){ alert('here');}else{ alert('test is ok!');} 输出结果为here var i = 0;if(i){ alert('here');}else{ alert(