The package configuration file, nlohmann_jsonConfig.cmake, can be used either from an install tree or directly out of the build tree. Embedded To embed the library directly into an existing CMake project, place the entire source tree in a subdirectory and call add_subdirectory() in your CMa...
from_json(<jsonStr>, <schema>) 参数说明 jsonStr:必填。输入的JSON字符串。 schema:必填。写法与建表语句的类型一致。例如array、map<string, array<string>>或struct<a:int, b:double, `C`:map<string,string>>。 说明 STRUCT的Key区分大小写。此外,STRUCT类型还有一种写法a bigint, b double,等同...
AI代码解释 importjsonfromdatetimeimportdatetimeclassCustomJSONEncoder(json.JSONEncoder):defdefault(self,obj):ifisinstance(obj,datetime):returnobj.strftime('%Y-%m-%d %H:%M:%S')returnsuper().default(obj)# 使用自定义编码器data_with_datetime={'event':'meeting','time':datetime.now()}json_string_cus...
SELECTget_json_object(json, "$['China.beijing'].school['id']")FROMmf_jsonWHEREid=1;--取id的值,查询key为China_beijing,返回0。查询方法有如下两种。SELECTget_json_object(json, "$['China_beijing'].school['id']")FROMmf_jsonWHEREid=2;SELECTget_json_object(json, "$.China_beijing.school[...
DROP TABLE IF EXISTS t2;CREATE TABLE t2(id INT, a TINYINT, b VARCHAR(5), c DATE, d DECIMAL);INSERT INTO t2 SELECT * FROM JSON_TABLE(JSON_ARRAY(JSON_OBJECT('a',1,'b','abc'), JSON_OBJECT('a',2,'b','abcd'), JSON_OBJECT('a',1000,'b','xyz'), JSON_OBJECT('c', TIME'...
functionTraversal(){for(varcinobj){console.log(c+":",obj[c]);}} 程序输出结果为: 在.NET中如何使用JSON 说到在.net中使用JSON,就不得不提到JSON.NET,它是一个非常著名的在.net中处理JSON的工具,我们最常用的是下面两个功能。 1,通过序列化将.net对象转换为JSON字符串 ...
3. This notice may not be removed or altered from any source distribution. Jean-loup Gailly Mark Adler For src/tbox/hash/adler32.c: ``` /* adler32.c -- compute the Adler-32 checksum of a data stream * Copyright (C) 1995-2011, 2016 Mark Adler * For conditions of distribution and ...
SELECTJSON_VALUE(f.doc,'$.id')ASName, JSON_VALUE(f.doc,'$.address.city')ASCity, c.givenName, c.gradeFROMFamilies fCROSSAPPLYOPENJSON(f.doc,'$.children')WITH( gradeINT, givenNameNVARCHAR(100) ) c 此查询结果显示在下表中: 名称城市givenName年级 ...
Description copied from interface: JSONGetter 获取JSON配置 Specified by: getConfig in interface JSONGetter<Integer> Returns: JSONConfig setDateFormat public JSONArray setDateFormat(String format) 设置转为字符串时的日期格式,默认为时间戳(null值) Parameters: format - 格式,null表示使用时间戳 Returns: th...
To use this library from a CMake project, you can locate it directly with find_package() and use the namespaced imported target from the generated package configuration: # CMakeLists.txt find_package(nlohmann_json 3.2.0 REQUIRED) ... add_library(foo ...) ... target_link_libraries(foo...