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How to permanently add a private key with ssh-add on Ubuntu? [closed]
...ate one. It does not need root rights, so simply:
nano ~/.ssh/config
...and enter the lines above as per your requirements.
For this to work the file needs to have chmod 600. You can use the command chmod 600 ~/.ssh/config.
If you want all users on the computer to use the key put these lines in...
iPhone OS: How do I create an NSDate for a specific date?
...
@Chuck's answer is correct, and lead me to the following code. Thought I'd share:
NSDateComponents *comps = [[NSDateComponents alloc] init];
[comps setDay:10];
[comps setMonth:10];
[comps setYear:2010];
NSDate *date = [[NSCalendar currentCalendar] date...
open() in Python does not create a file if it doesn't exist
... open a file as read/write if it exists, or if it does not, then create it and open it as read/write? From what I read, file = open('myfile.dat', 'rw') should do this, right?
...
Why can I pass 1 as a short, but not the int variable i?
...soft.com/en-us/library/ybs77ex4(v=vs.71).aspx
As this page says, implicit casts from a bigger data type to short are only allowed for literals. The compiler can tell when a literal is out of range, but not otherwise, so it needs reassurance that you've avoided an out-of-range error in your program ...
Mac OS X - EnvironmentError: mysql_config not found
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You did brew install mysql
You did export PATH=$PATH:/usr/local/mysql/bin
And finally, you did pip install MySQL-Python (or pip3 install mysqlclient if using python 3)
If you did all those steps in the same order, and you still got an error, read on to the end, if, however, you did not follow the...
How often does python flush to a file?
... to use the system default, which is usually line buffered for tty devices and fully buffered for other files.
If omitted, the system default is used.
code:
bufsize = 0
f = open('file.txt', 'w', buffering=bufsize)
shar...
What's the difference between equal?, eql?, ===, and ==?
I am trying to understand the difference between these four methods. I know by default that == calls the method equal? which returns true when both operands refer to exactly the same object.
...
How to get the number of Characters in a String?
...en adds in the comments:
Actually you can do len() over runes by just type casting.
len([]rune("世界")) will print 2. At leats in Go 1.3.
And with CL 108985 (May 2018, for Go 1.11), len([]rune(string)) is now optimized. (Fixes issue 24923)
The compiler detects len([]rune(string)) pattern automati...
How to access command line parameters?
The Rust tutorial does not explain how to take parameters from the command line. fn main() is only shown with an empty parameter list in all examples.
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.toArray(new MyClass[0]) or .toArray(new MyClass[myList.size()])?
...t it is not created. Additionally, using the zero-length object results in casting(s) within the toArray() - method.
See the source of ArrayList.toArray():
public <T> T[] toArray(T[] a) {
if (a.length < size)
// Make a new array of a's runtime type, but my contents:
re...