在
about操场上按钮给出了一些提示：
除了一些例外，游乐场可以使用大多数标准库。
通过 标准库 中的封装 标准库 的意思，这是上市的 软件包 页面，根据
标准库 部分。
其他 部分下列出的软件包不符合要求（这是您尝试过的-
该软件包
golang.org/x/exp/ebnf属于“
其他” 类别下列出的实验性和不推荐使用的软件包）。
如果您想进一步了解Playground实施，则必须阅读该链接：
围棋博客：围棋场内
这是一个详尽的运动场测试，用于导入所有标准库包，以表明它们至少可以导入，但这并不意味着可以合理地使用它们中的所有（ 甚至任何东西
）。标准库中唯一出现编译错误的软件包是
runtime/cgo;
出于明显的原因，不包含没有可构建Go源文件的“软件包”（因为如果文件夹不包含至少一个可构建Go源文件，则该文件夹不是软件包）。
这是Playground链接，您可以自己尝试。
package mainimport ( _ "archive/tar" _ "archive/zip" _ "bufio" _ "bytes" _ "compress/bzip2" _ "compress/flate" _ "compress/gzip" _ "compress/lzw" _ "compress/zlib" _ "container/heap" _ "container/list" _ "container/ring" _ "crypto" _ "crypto/aes" _ "crypto/cipher" _ "crypto/des" _ "crypto/dsa" _ "crypto/ecdsa" _ "crypto/elliptic" _ "crypto/hmac" _ "crypto/md5" _ "crypto/rand" _ "crypto/rc4" _ "crypto/rsa" _ "crypto/sha1" _ "crypto/sha256" _ "crypto/sha512" _ "crypto/subtle" _ "crypto/tls" _ "crypto/x509" _ "crypto/x509/pkix" _ "database/sql" _ "database/sql/driver" _ "debug/dwarf" _ "debug/elf" _ "debug/gosym" _ "debug/macho" _ "debug/pe" _ "debug/plan9obj" _ "encoding" _ "encoding/ascii85" _ "encoding/asn1" _ "encoding/base32" _ "encoding/base64" _ "encoding/binary" _ "encoding/csv" _ "encoding/gob" _ "encoding/hex" _ "encoding/json" _ "encoding/pem" _ "encoding/xml" _ "errors" _ "expvar" _ "flag" _ "fmt" _ "go/ast" _ "go/build" _ "go/constant" _ "go/doc" _ "go/format" _ "go/importer" _ "go/parser" _ "go/printer" _ "go/scanner" _ "go/token" _ "go/types" _ "hash" _ "hash/adler32" _ "hash/crc32" _ "hash/crc64" _ "hash/fnv" _ "html" _ "html/template" _ "image" _ "image/color" _ "image/color/palette" _ "image/draw" _ "image/gif" _ "image/jpeg" _ "image/png" _ "index/suffixarray" _ "io" _ "io/ioutil" _ "log" _ "log/syslog" _ "math" _ "math/big" _ "math/cmplx" _ "math/rand" _ "mime" _ "mime/multipart" _ "mime/quotedprintable" _ "net" _ "net/http" _ "net/http/cgi" _ "net/http/cookiejar" _ "net/http/fcgi" _ "net/http/httptest" _ "net/http/httputil" _ "net/http/pprof" _ "net/mail" _ "net/rpc" _ "net/rpc/jsonrpc" _ "net/smtp" _ "net/textproto" _ "net/url" _ "os" _ "os/exec" _ "os/signal" _ "os/user" _ "path" _ "path/filepath" _ "reflect" _ "regexp" _ "regexp/syntax" _ "runtime" // _ "runtime/cgo" // ERROR: missing Go type information // for global symbol: .dynsym size 60 _ "runtime/debug" _ "runtime/pprof" _ "runtime/race" _ "runtime/trace" _ "sort" _ "strconv" _ "strings" _ "sync" _ "sync/atomic" _ "syscall" _ "testing" _ "testing/iotest" _ "testing/quick" _ "text/scanner" _ "text/tabwriter" _ "text/template" _ "text/template/parse" _ "time" _ "unipre" _ "unipre/utf16" _ "unipre/utf8" _ "unsafe")func main() { println("ok")}
