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What are naming conventions for MongoDB?
...ural: more obvious to label a collection of something as the plural, e.g. "files" rather than "file"
>No word separators: Avoids issues where different people (incorrectly) separate words (username <-> user_name, first_name <->
firstname). This one is up for debate according to a ...
JS - get image width and height from the base64 code
...us use just wrap it into a promise like this:
function getImageDimensions(file) {
return new Promise (function (resolved, rejected) {
var i = new Image()
i.onload = function(){
resolved({w: i.width, h: i.height})
};
i.src = file
})
}
then you can use await to get the dat...
POST data to a URL in PHP
...y($data),
)
);
$context = stream_context_create($options);
$result = file_get_contents($url, false, $context);
var_dump($result);
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...
dynamically add and remove view to viewpager
...iewPage can display. This must
// never be 0.
@Override
public int getCount ()
{
return views.size();
}
//-----------------------------------------------------------------------------
// Used by ViewPager.
@Override
public boolean isViewFromObject (View view, Object object)
...
How do I debug error ECONNRESET in Node.js?
...
A simple tcp server I had for serving the flash policy file was causing this. I can now catch the error using a handler:
# serving the flash policy file
net = require("net")
net.createServer((socket) =>
//just added
socket.on("error", (err) =>
console.log("Caught ...
ros 基本调试 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...件
在r43333及以后版本，可以在启动菜单中选择ReactOS(Log file)。这样调试信息就会被写入到名为debug.log的文件中去
这种方法有一定局限性，那就是致命的系统错误信息不会被写入到文件中去。
将调试文本输出到屏幕
将freeldr.ini...
How is “mvn clean install” different from “mvn install”?
...g the install phase for each module.
What this does is clear any compiled files you have, making sure that you're really compiling each module from scratch.
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When and why are database joins expensive?
...ires retrieval of only the keys. In practice, not even the key values are fetched: the key hash values are used for join comparisons, mitigating the cost of multi-column joins and radically reducing the cost of joins involving string comparisons. Not only will vastly more fit in cache, there's a lot...
Why does make think the target is up to date?
This is my Makefile:
4 Answers
4
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How can I expose more than 1 port with Docker?
...
Is there a way to specify the ports in a config file? For example using the option --env-file ?
– Giovanni Bitliner
Jan 21 '15 at 21:21
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