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Set a default parameter value for a JavaScript function
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@SiPlus and you got extra reference errors for free of charge while trying to use undefined objects :p Even while it may work with some browsers and might be faster, null is still an object and undefined is reference to primitive type that is trying to tell tha...
What does status=canceled for a resource mean in Chrome Developer Tools?
...requests showed that subsequent requests weren't going to work (DNS lookup error, earlier (same) request resulted e.g. HTTP 400 error code, etc)
In our case we finally traced it down to one frame trying to append HTML to another frame, that sometimes happened before the destination frame even load...
Is there a “vim runtime log”?
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:messages shows all warnings, errors, and informational messages that appeared (possibly briefly) in the vim statusline.
:echo errmsg prints the most recent error message.
g< is another feature few people know about. From :help g<:
The g< c...
Change a Git remote HEAD to point to something besides master
...n Schlack
Suppress the message 'origin/HEAD set to master' in case of an error.
$ git remote set-head origin -a
error: Not a valid ref: refs/remotes/origin/master
origin/HEAD set to master
share
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Why are my balls disappearing? [closed]
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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 ...
JAX-RS — How to return JSON and HTTP status code together?
...uuid == null || uuid.trim().length() == 0) {
return Response.serverError().entity("UUID cannot be blank").build();
}
Entity entity = service.getById(uuid);
if(entity == null) {
return Response.status(Response.Status.NOT_FOUND).entity("Entity not found for UUID: " + uuid)....