IE,Edgeで日本語ファイル名をダウンロードすると文字化けしてしまう対策

header('Content-Disposition: attachment; filename*=UTF-8\'\''.rawurlencode($filename));

シート保護掛けたが、パスワードを忘れてしまいました？ハッキング方法

下記のソースコードを解除したいシートにコピーして、実行するだけ…

Sub PasswordBreaker()
Dim i As Integer, j As Integer, k As Integer
Dim l As Integer, m As Integer, n As Integer
Dim i1 As Integer, i2 As Integer, i3 As Integer
Dim i4 As Integer, i5 As Integer, i6 As Integer
On Error Resume Next
For i = 65 To 66: For j = 65 To 66: For k = 65 To 66
For l = 65 To 66: For m = 65 To 66: For i1 = 65 To 66
For i2 = 65 To 66: For i3 = 65 To 66: For i4 = 65 To 66
For i5 = 65 To 66: For i6 = 65 To 66: For n = 32 To 126
ActiveSheet.Unprotect Chr(i) & Chr(j) & Chr(k) & _
Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & _
Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
If ActiveSheet.ProtectContents = False Then
MsgBox "One usable password is " & Chr(i) & Chr(j) & _
Chr(k) & Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & _
Chr(i3) & Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
Exit Sub
End If
Next: Next: Next: Next: Next: Next
Next: Next: Next: Next: Next: Next
End Sub

ここ参照

javascriptで月末日を求める

12+1=13になるけど、そこも問題ないみたい、0が1月らしい

var n = new Date('2019-12-01')
var m = new Date(n.getFullYear(),n.getMonth()+1,0);
console.log(m);

> Tue Dec 31 2019 00:00:00 GMT+0900 (日本標準時)


sql DATE_ADD

select DATE_ADD('2019-01-31', INTERVAL + 1 MONTH);
2019-02-28

select DATE_ADD('2019-01-30', INTERVAL + 1 MONTH);
2019-02-28

select DATE_ADD('2019-01-29', INTERVAL + 1 MONTH);
2019-02-28

select DATE_ADD('2019-01-28', INTERVAL + 1 MONTH);
2019-02-28

select DATE_ADD('2019-01-27', INTERVAL + 1 MONTH);
2019-02-27

えっへん！


GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'password';


左に列の合計,FormulaLocalの書き方

cl.Offset(0, 3).FormulaLocal = "=SUM(RC[-2],RC[-1])"

vlookupではできない、範囲指定のカスタマイズ関数

Function vlookups(val As Range, min As Range, max As Range, col As Range) As String
Dim cl As Range
For Each cl In min
    If val.Value >= cl.Value And val.Value <= cl.Worksheet.Cells(cl.Row, max.Column) Then
        vlookups = cl.Worksheet.Cells(cl.Row, col.Column)
        Exit For
    End If
Next
End Function

使い方： =vlookups(E4,$A$1:$A$4,$B$1:$B$4,$C$1:$C$4) 結果：