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Mongod complains that there is no /data/db folder
...ectory in the wrong place
/data/db means that it's directly under the '/' root directory, whereas you created 'data/db' (without the leading /) probably just inside another directory, such as the '/root' homedirectory.
You need to create this directory as root
Either you need to use sudo , e.g. s...
What are the risks of running 'sudo pip'?
... sudo. In other words, you run arbitrary Python code from the Internet as root. If someone puts up a malicious project on PyPI and you install it, you give an attacker root access to your machine. Prior to some recent fixes to pip and PyPI, an attacker could also run a man in the middle attack to i...
Google Play on Android 4.0 emulator
... corresponding Android version, just pull them out of your device:
adb -d root
adb -d pull /system/app/GoogleLoginService.apk
adb -d pull /system/app/GoogleServicesFramework.apk
adb -d pull /system/app/Phonesky.apk
You must have root-level access (run adb root) to the device in order to pull thes...
Organizing a multiple-file Go project [closed]
... directory under src. The only 3 spec-related directories are the 3 in the root of your GOPATH: bin, pkg, src . Underneath src, you can simply place your project mypack, and underneath that is all of your .go files including the mypack_test.go
go build will then build into the root level pkg and b...
程序员保值的4个秘密 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...易理解的，它是说我们要从用户的角度来思考这个产品该如何设计，因为产品好不好用最终由用户说了算。如果你在实现产品时也能站在用户的角度来思考，斤斤计较一个功能是否符合应用场景、是否与用户的行为特点吻合、是...
Similar to jQuery .closest() but traversing descendants?
...
Pure JS solution (using ES6).
export function closestDescendant(root, selector) {
const elements = [root];
let e;
do { e = elements.shift(); } while (!e.matches(selector) && elements.push(...e.children));
return e.matches(selector) ? e : null;
}
Example
Considering th...
Chaining multiple filter() in Django, is this a bug?
...ng like this: 'SELECT blog JOIN entry WHERE entry.head_list LIKE "Lennon" UNION SELECT blog JOIN entry WHERE entry.head_list LIKE "Lennon"'
– Johnny Tsang
Jan 27 '14 at 1:57
...
Why doesn't Git ignore my specified file?
...
Make sure that your .gitignore is in the root of the working directory, and in that directory run git status and copy the path to the file from the status output and paste it into the .gitignore.
If that doesn’t work, then it’s likely that your file is already ...
Using querySelectorAll to retrieve direct children
... At the time it was asked, a universally-implemented way to do "combinator rooted queries" (as John Resig called them) did not exist.
Now the :scope pseudo-class has been introduced. It is not supported on [pre-Chrominum] versions of Edge or IE, but has been supported by Safari for a few years alre...
Converting an array of objects to ActiveRecord::Relation
...l as sorting them with a specific column(id for instance). Since I'm using MySQL, the field function could be helpful.
MyModel.where('id in (?)',ids).order("field(id,#{ids.join(",")})")
The SQL looks like:
SELECT ... FROM ... WHERE (id in (11,5,6,7,8,9,10))
ORDER BY field(id,11,5,6,7,8,9,10)
...