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What's the reason for “Error:Cannot determine Java VM executable in selected JDK”?
...85. If you have the other JDK (1.7 in my example) generally configured, no error will occur, but the Project SDK will silently be changed back. Otherwise, this error occurs.
The problem can easily be resolved by manually editing the value in ".idea/sbt.xml" to the right JDK version.
...
MySQL error 2006: mysql server has gone away
...on't know why. The default value was 1M but when I changed it to 100M the error went away. The problem started when I set wait_timeout = 30 in an attempt to reduce the number of idle threads on my server.
– Vincent
Apr 11 '18 at 0:27
...
What is the difference between static_cast and C style casting?
... C cast (int)something can't fail - either you get cast to int or compiler error.
– Tomáš Zato - Reinstate Monica
Nov 16 '15 at 12:34
4
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Maven2: Missing artifact but jars are in place
...isplace Maven. This tool gives me so many problems, and when it fails, the error messages are useless. Thanks for the solution, though. I've just wasted about an hour trying to get this resolved, but this suggestion finally worked for me.
– Mike Brennan
Dec 10 ...
通过FastCGI Cache实现服务降级 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...询，架构图如下：
Degradation
实现的关键点在于通过error_page处理异常，并且完成服务降级：
limit_conn_zone $server_name zone=perserver:1m;
error_page 500 502 503 504 = @failover;
fastcgi_cache_path
/tmp
levels=1:2
keys_zone=failover:100m
...
Set type for function parameters?
... Flow library from Facebook, "a static type checker, designed to find type errors in JavaScript programs"
Definition:
/* @flow */
function foo(x: string, y: number): string {
return x.length * y;
}
foo('Hello', 42);
Type checking:
$> flow
hello.js:3:10,21: number
This type is incompatib...
Error: This Android SDK requires Android Developer Toolkit version 22.6.1 or above
...g fine. Suddenly, When I open eclipse today, it keeps showing me following error:
11 Answers
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MySQL root password change
... root password that I just set and still get Access denied for user 'root' errors. I have also tried completely removing and reinstalling mysql (including removing the my.cnf file) and still no luck. Does anyone have any suggestions on what I can do next?
...
Logging uncaught exceptions in Python
...gt; import sys
>>> def foo(exctype, value, tb):
... print 'My Error Information'
... print 'Type:', exctype
... print 'Value:', value
... print 'Traceback:', tb
...
Override sys.excepthook:
>>> sys.excepthook = foo
Commit obvious syntax error (leave out the colon...
How to throw an exception in C?
...
There are no exceptions in C. In C the errors are notified by the returned value of the function, the exit value of the process, signals to the process (Program Error Signals (GNU libc)) or the CPU hardware interruption (or other notification error form the CPU if...