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Unsupported major.minor version 52.0 [duplicate]
...ossibly because the jar was compiled in JDK 1.8, but you are trying to run it using a JDK 1.7 environment. The reported number is the required number, not the number you are using. To solve this, it's always better to have the JDK and JRE pointed to the same version.
In IntelliJ IDEA,
Go to Maven ...
How to turn on/off ReactJS 'development mode'?
...e checks
The above is the most common pattern, and other libraries follow it as well. So to "disable" these checks we need to toggle NODE_ENV to "production"
The proper way to disable "dev mode" is through your bundler of choice.
webpack
Use the DefinePlugin in your webpack config like so:
new webp...
常用Sql - 爬虫/数据库 - 清泛IT社区，为创新赋能！
本帖最后由 zqp2013 于 2015-3-17 22:06 编辑
mysql：drop table if exists tablename;
不能写成
drop table tablename if exists tablename;
mysql：建立索引Sql
CREATE TABLE tablename (
`ID` &nbs...
Linux bpftrace学习笔记（持续更新） - 操作系统(内核) - 清泛网 - 专注IT技能提升
...trace/tools/opensnoop.bt
Attaching 6 probes...
Tracing open syscalls... Hit Ctrl-C to end.
PID COMM FD ERR PATH
4235 head -1 2 tls/x86_64/x86_64/libc.so.6
4235 head -1 2 tls/x86_64/libc.so.6
4235 head -1 2 tls/x86_64/libc.s...
Linux bpftrace学习笔记（持续更新） - 操作系统(内核) - 清泛网 - 专注IT技能提升
...trace/tools/opensnoop.bt
Attaching 6 probes...
Tracing open syscalls... Hit Ctrl-C to end.
PID COMM FD ERR PATH
4235 head -1 2 tls/x86_64/x86_64/libc.so.6
4235 head -1 2 tls/x86_64/libc.so.6
4235 head -1 2 tls/x86_64/libc.s...
Linux bpftrace学习笔记（持续更新） - 操作系统(内核) - 清泛网移动版 - ...
...trace/tools/opensnoop.bt
Attaching 6 probes...
Tracing open syscalls... Hit Ctrl-C to end.
PID COMM FD ERR PATH
4235 head -1 2 tls/x86_64/x86_64/libc.so.6
4235 head -1 2 tls/x86_64/libc.so.6
4235 head -1 2 tls/x86_64/libc.s...
Linux bpftrace学习笔记（持续更新） - 操作系统(内核) - 清泛网 - 专注IT技能提升
...trace/tools/opensnoop.bt
Attaching 6 probes...
Tracing open syscalls... Hit Ctrl-C to end.
PID COMM FD ERR PATH
4235 head -1 2 tls/x86_64/x86_64/libc.so.6
4235 head -1 2 tls/x86_64/libc.so.6
4235 head -1 2 tls/x86_64/libc.s...
Linux bpftrace学习笔记（持续更新） - 操作系统(内核) - 清泛网 - 专注IT技能提升
...trace/tools/opensnoop.bt
Attaching 6 probes...
Tracing open syscalls... Hit Ctrl-C to end.
PID COMM FD ERR PATH
4235 head -1 2 tls/x86_64/x86_64/libc.so.6
4235 head -1 2 tls/x86_64/libc.so.6
4235 head -1 2 tls/x86_64/libc.s...
Linux bpftrace学习笔记（持续更新） - 操作系统(内核) - 清泛网移动版 - ...
...trace/tools/opensnoop.bt
Attaching 6 probes...
Tracing open syscalls... Hit Ctrl-C to end.
PID COMM FD ERR PATH
4235 head -1 2 tls/x86_64/x86_64/libc.so.6
4235 head -1 2 tls/x86_64/libc.so.6
4235 head -1 2 tls/x86_64/libc.s...
Linux bpftrace学习笔记（持续更新） - 操作系统(内核) - 清泛网 - 专注IT技能提升
...trace/tools/opensnoop.bt
Attaching 6 probes...
Tracing open syscalls... Hit Ctrl-C to end.
PID COMM FD ERR PATH
4235 head -1 2 tls/x86_64/x86_64/libc.so.6
4235 head -1 2 tls/x86_64/libc.so.6
4235 head -1 2 tls/x86_64/libc.s...