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Count occurrences of a char in a string using Bash
I need to count the number of occurrences of a char in a string using Bash.
7 Answers
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String literals: Where do they go?
... dependent on your platform and could change over time), just use arrays:
char foo[] = "...";
The compiler will arrange for the array to get initialized from the literal and you can modify the array.
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Heroku NodeJS http to https ssl forced redirect
...irect within cloudflare easily like this:
Login and go to your dashboard
Select Page Rules
Add your domain, e.g. www.example.com and switch always use https to on
Types in Objective-C on iOS
...e:
32 bit process:
NSLog(@"Primitive sizes:");
NSLog(@"The size of a char is: %d.", sizeof(char));
NSLog(@"The size of short is: %d.", sizeof(short));
NSLog(@"The size of int is: %d.", sizeof(int));
NSLog(@"The size of long is: %d.", sizeof(long));
NSLog(@"The size of long long is: %d....
How to do ssh with a timeout in a script?
I'm executing a script connecting via password-less SSH on a remote host. I want to set a timeout, so that if the remote host is taking an infinite time to run, I want to come out of that ssh session and continue other lines in my sh script.
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ActionController::InvalidAuthenticityToken
...able Entity) was returned to the user.
The solution for Rails 3:
Add:
skip_before_filter :verify_authenticity_token
or as "sagivo" pointed out in Rails 4 add:
skip_before_action :verify_authenticity_token
On pages which do caching.
As @toobulkeh commented this is not a vulnerability o...
Pinging servers in Python
...ere is a module called pyping that can do this. It can be installed with pip
pip install pyping
It is pretty simple to use, however, when using this module, you need root access due to the fact that it is crafting raw packets under the hood.
import pyping
r = pyping.ping('google.com')
if r....
C++ performance challenge: integer to std::string conversion
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#include <string>
const char digit_pairs[201] = {
"00010203040506070809"
"10111213141516171819"
"20212223242526272829"
"30313233343536373839"
"40414243444546474849"
"50515253545556575859"
"60616263646566676869"
"70717273747576777879"...
Xcode 4 - “Archive” is greyed out?
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You have to select the device in the schemes menu in the top left where you used to select between simulator/device. It won’t let you archive a build for the simulator.
Or you may find that if the iOS device is already selected the ar...
Difference between Char.IsDigit() and Char.IsNumber() in C#
What's the difference between Char.IsDigit() and Char.IsNumber() in C#?
3 Answers
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