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rvm installation not working: “RVM is not a function”
...ngs. It is required to open new terminal after this setting the flag.
Sometimes it is required to set the command to /bin/bash --login.
For remote connections it is important to understand the differene between running interactive ssh session and executing single commands.
While running ssh ser...
How are people managing authentication in Go? [closed]
...ry key,
UserID int not null, -- Could have a hard "references User"
LoginTime <time type> not null,
LastSeenTime <time type> not null
)
When a user logs in to your site via a POST under TLS, determine if the password is valid.
Then issue a random session key, say 50 or more crypto ...
Force Java timezone as GMT/UTC
I need to force any time related operations to GMT/UTC, regardless the timezone set on the machine. Any convenient way to so in code?
...
Why can't I use a list as a dict key in python?
... a much bigger deal out of their object identity anyway (when was the last time you had two distinct module objects called sys?), and are compared by that anyway. Therefore, it's less surprising - or even expected - that they, when used as dict keys, compare by identity in that case as well.
...
What's the difference between %s and %d in Python string formatting?
...'Hi Alice I have 42 donuts'
This could be achieved with a "+" most of the time. To gain a deeper understanding to your question, you may want to check {} / .format() as well. Here is one example: Python string formatting: % vs. .format
also see here a google python tutorial video @ 40', it has som...
Bash function to find newest file matching pattern
...
The ls command has a parameter -t to sort by time. You can then grab the first (newest) with head -1.
ls -t b2* | head -1
But beware: Why you shouldn't parse the output of ls
My personal opinion: parsing ls is only dangerous when the filenames can contain funny char...
How can I do string interpolation in JavaScript?
...ter, requiring it to be hit twice to write (and writes two of them at this time). This is because some characters interact with them, such as "e". If I try to write "ello" with them, I get èllo``. It is also somewhat annoyingly located (shift+forwardtick, which is another such special lookahead cha...
Android Emulator: Installation error: INSTALL_FAILED_VERSION_DOWNGRADE
...n install the fresh one .
You could simply increase the number by one each time a new version is released.
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Correct idiom for managing multiple chained resources in try-with-resources block?
...on the decorated object not be called. Whilst that has been fixed for some time, expect it from other implementations.
2)
try (
FileWriter fw = new FileWriter(file);
BufferedWriter bw = new BufferedWriter(fw)
) {
bw.write(text);
}
We're still flushing in the implicit finally block (n...
How to extract the first two characters of a string in shell scripting?
...method is usually better if you're going to be doing it a lot (like 50,000 times per report as you mention) since there's no process creation overhead. All solutions which use external programs will suffer from that overhead.
If you also wanted to ensure a minimum length, you could pad it out befor...