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Why are my balls disappearing? [closed]
...
Your error comes from this line initially:
var direction1 = Math.atan2(ball1.velocitY, ball1.velocityX);
You have ball1.velocitY (which is undefined) instead of ball1.velocityY. So Math.atan2 is giving you NaN, and that NaN val...
Why does ENOENT mean “No such file or directory”?
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It's an abbreviation of Error NO ENTry (or Error NO ENTity), and can actually be used for more than files/directories.
It's abbreviated because C compilers at the dawn of time didn't support more than 8 characters in symbols.
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PHP 错误记录和聚合的平台Sentry实战 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...vel = implode('|', array(
'debug',
'info',
'warning',
'error',
'fatal',
));
$client = new Raven_Client($dsn, $options);
while (($line = fgets(STDIN)) !== false) {
if (!preg_match("/{$pattern_content}/", $line, $match)) {
continue;
}
list($lin...
Curses library not found. Please install appropriate package - 更多...
... Could NOT find Curses (missing: CURSES_LIBRARY CURSES_INCLUDE_PATH)CMake Error at cmake readli...CentOS安装MySql报错：
-- Could NOT find Curses (missing: CURSES_LIBRARY CURSES_INCLUDE_PATH)
CMake Error at cmake/readline.cmake:85 (MESSAGE): Curses library not found. Please install appro...
ClickTools 拓展：为布局、标签等没有点击事件的组件添加点击事件 - App In...
... registered component
Use this event to set blocks of component click.
error ~ It returns the error if something went wrong
Use this event to do something after error occured
[color=var(--primary-high-or-secondary-low)][backcolor=var(--blend-primary-secondary-5)]
Techno_Vedang:
component ...
PHP Redirect with POST data
... echo @stream_get_contents($fp);
die();
} else {
// Error
throw new Exception("Error loading '$url', $php_errormsg");
}
}
share
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How to start working with GTest and CMake
...s between your test binary and the Google Test library is to blame on such errors. That's why it's recommended to bring in Google Test in the source form and build it along with your tests. It's very easy to do in CMake. You just invoke ADD_SUBDIRECTORY with the path to the gtest root and then you ...
How to declare Return Types for Functions in TypeScript
... to number literal. the compiler will infer both types and you will get an error if you try to assign a string to a number.
class Greeter {
greet() {
return "Hello, "; // type infered to be string
}
}
var x = 0; // type infered to be number
// now if you try to do this, you will...
How to configure git push to automatically set upstream without -u?
...s by @VonC and @Frexuz are helpful, but both of their solutions produce an error for me. Using both of their answers, I cobbled together something that works for me:
[alias]
pu = ![[ $(git config "branch.$(git symbolic-ref --short HEAD).merge") = '' ]] && git push -u origin $(git sy...
How to sleep for five seconds in a batch file/cmd [duplicate]
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@Cybergibbons Beware fence-post error here. There is a 1s delay between each ping, so for a 10s delay you need to do 11 pings, i.e. "ping 127.0.0.1 -n 11 > nul"
– gb96
Jul 11 '13 at 0:39
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