因此,我一直在研究一种校验和方法,我将4个二进制数转换为十进制,将它们相加,再次将和转换为二进制,并计算校验和。这是我的代码,我不知道如何使用java来做最后一部分,即计算校验和
public static void main(String[] args) throws Exception{
String a = "1010000001000011";
String b = "1111100101001111";
String c = "1111111111101110";
St
如果在指定的范围内找到一个单元格值,我编写了以下UDF函数来返回True,否则返回False:
Function find_in_range(value_to_find As Variant, lookup_range As Range) As Boolean
For Each cell In lookup_range.Cells.SpecialCells(xlConstants)
If cell.Value = value_to_find Then
find_in_range = True
Exit For
Else
find
有人能帮助我理解这三个功能的使用和好处,这是Percona在安装后建议的吗?
* Percona XtraDB Cluster is distributed with several useful UDF (User Defined Function) from Percona Toolkit.
* Run the following commands to create these functions:
mysql -e "CREATE FUNCTION fnv1a_64 RETURNS INTEGER SONAME 'libfnv1a_udf.so