您将在本节中使用以下命令: 创建ruby 脚本过程中的第一个任务是创建到数据库的连接。执行以下步骤: 查询数据 您将在本节中使用以下命令: 要创建一个简单查询并显示结果,执行以下步骤。 绑定变量 绑定变量提高了代码可重用性,消除了 SQL 注入攻击的风险。您将在本节中使用以下命令: 要在本示例中使用绑定变量,执...
a,b]# expandarray_tmp1=_tmp[0]_tmp2=_tmp[1]_tmp3=_tmp[2]# setlocala=_tmp1b=_tmp2c...
array.rb ast.c ast.rb autogen.sh bignum.c builtin.c builtin.h class.c common.mk compar.c compile.c complex.c configure.ac constant.h cont.c darray.h debug.c debug_counter.c debug_counter.h dir.c ...
Ruby.Array.copyOf newRubyArray Ruby.Hash.create Hash Ruby.Hash.of rh Ruby.Hash.copyOf newRubyHash Ruby.Entry.of hp Ruby.Set.create Ruby.Set.of Ruby.Set.copyOf newRubySet Ruby.Enumerator.of Ruby.Enumerator.copyOf newRubyEnumerator Ruby.LazyEnumerator.of Ruby.LazyEnumerator.copyOf newRu...
Or an array of strings: $dotenv->required(['DB_HOST','DB_NAME','DB_USER','DB_PASS']); If any ENV vars are missing, Dotenv will throw aRuntimeExceptionlike this: One or more environment variables failed assertions: DATABASE_DSN is missing ...
That does not help too… Lets see this: json = array.to_json puts json Returns to the Ruby console: ["tag 2\"\\\3\"","page 7\""] So, it seams the to_json giving the “right amount” of escape characters… In DevTools <script> console.log('#{json}'); var data = JSON...
{TagArrayRead}用于对资源的模拟,详见上篇文章CHI PROTOCOL(二):(三).2. 资源模拟。 transition(I, {ReadShared,ReadNotSharedDirty}, BUSY_BLKD) { Initiate_Request; Initiate_ReadShared_Miss; Allocate_DirEntry; Profile_Miss; Pop_ReqRdyQueue; ProcessNextState; } Initiate_Request用于初始化TBE,将cache...
Array的用法1.新建数组ary = [1, "two", 3.0] #=> [1, "two", 3.0] ary = Array.new#=> [] Array.new(3) #=> [nil, nil, nil] Array.new(3, true) #=> [true, true, true] Array.new(4) { Hash.new } #=> [{}, {}, {}, {}] empty_table = Array.new(3) { Array.ne...
frag_array=inode.frag_array.to_a frag_array.eachdo|frag|pp fragendendend#empty space
# 在Array类中…… def each for each element # <-- 无效的Ruby语句 yield(element) end end 许多内建于C和Java等语言的循环结构在Ruby中只是方法调用,这些方法会零次或多次地调用相关联的block。 [ 'cat', 'dog', 'horse' ].each {|name| print name, " " } 5.times { print "*" } 3.upto...