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Best practices when running Node.js with port 80 (Ubuntu / Linode) [closed]
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This allows port 80/443 to remain protected, while still preventing you from serving requests as root:
function drop_root() {
process.setgid('nobody');
process.setuid('nobody');
}
A full working example using the above function:
var process = require('process');
var http = require('ht...
When exactly are onSaveInstanceState() and onRestoreInstanceState() called?
The following figure (from the official doc ) describes the well-known lifecycle of an Android activity:
5 Answers
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Do I really need to encode '&' as '&'?
... @Delan: while I try to make every page I write validate, I understand from reading his question that he doesn't care about "morally". He just cares if it works or not. They are two different philosophies and both have their pros and cons, and there is not a "correct" one. For example this websi...
What is the difference between syntax and semantics in programming languages?
...rinted on each one. The rightmost wheel rotates the fastest; when it wraps from 9 back to zero, the wheel to its immediate left advances by one. When this wheel advances from 9 to 0, the one to its left advances, and so on.
– Jeff N
Jul 29 '13 at 19:20
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python multithreading wait till all threads finished
...roceed to wait for t3). If t1 took the longest to execute, when you return from it both t1 and t2 will return immediately without blocking.
– Maksim Skurydzin
Aug 15 '12 at 12:06
1...
Task vs Thread differences [duplicate]
... where the caller does not need the result.
Task
Finally, the Task class from the Task Parallel Library offers the best of both worlds. Like the ThreadPool, a task does not create its own OS thread. Instead, tasks are executed by a TaskScheduler; the default scheduler simply runs on the ThreadPool...
How can you find the height of text on an HTML canvas?
...of this working, I used this technique in the Carota editor.
Following on from ellisbben's answer, here is an enhanced version to get the ascent and descent from the baseline, i.e. same as tmAscent and tmDescent returned by Win32's GetTextMetric API. This is needed if you want to do a word-wrapped ...
Can git ignore a specific line?
...I ended up putting my sed-calls in a separate helper.sh file that I called from my gitconfig with sh ".git/helper.sh" making sure to pass through any parameters to sed with "$@" (I assume just the filepath is passed).
– ohaal
Jun 26 '18 at 14:57
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Elegant way to check for missing packages and install them?
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Yes. If you have your list of packages, compare it to the output from installed.packages()[,"Package"] and install the missing packages. Something like this:
list.of.packages <- c("ggplot2", "Rcpp")
new.packages <- list.of.packages[!(list.of.packages %in% installed.packages()[,"Pac...
If threads share the same PID, how can they be identified?
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The four threads will have the same PID but only when viewed from above. What you (as a user) call a PID is not what the kernel (looking from below) calls a PID.
In the kernel, each thread has it's own ID, called a PID (although it would possibly make more sense to call this a TID, or...