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When to use symbols instead of strings in Ruby?
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@andrewcockerham Your provided link is not working (Error-404). You have to remove last / (after strings ) from the link. Here it is: www.reactive.io/tips/2009/01/11/the-difference-between-ruby-symbols-and-strings
– Atul Khanduri
Oc...
Regular expression for floating point numbers
...ogramming in:
// will most likely result in an "Illegal escape character" error
String wrongPattern = "\.";
// will result in the string "\."
String correctPattern = "\\.";
All this escaping can get very confusing. If the language you are working with supports raw strings, then you should use tho...
Why can templates only be implemented in the header file?
...iations are referred to from other .cpp files, and I still get the linking error that the members are not found.
– oarfish
Sep 4 '19 at 14:38
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How to get current CPU and RAM usage in Python?
...roc_results_list.append(this_proc_dict)
except pywintypes.com_error, err_msg:
# Ignore and continue (proc_mem_logger calls this function once per second)
continue
return proc_results_list
def get_sys_stats():
''' Returns a dictionary of...
Expand Python Search Path to Other Source
...(for a module called report.py):
from modules.report import report, reportError
If I call my main script, this works. HOWEVER, I wanted to test each module by including a main() in each, and calling each directly, as:
python modules/report.py
Now Python complains that it can't find "a module ...
How to wait for all goroutines to finish without using time.Sleep?
... could be fixed by passing a pointer &wg, a better way to prevent such errors is to declare the WaitGroup variable as a pointer in the first place: wg := new(sync.WaitGroup) instead of var wg sync.WaitGroup.
– Robert Jack Will
May 22 '17 at 22:28
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How to deploy correctly when using Composer's develop / production switch?
...u to run composer install --no-dev in production, as composer install will error. Technically I think you're right; this isn't required, but it is an extra level of safety, which I like.
– dave1010
Feb 20 '14 at 10:23
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CSS triangle custom border color
...sible and invalid characters into my CSS file that caused validation/parse errors in that css file. Once I removed the invisible characters (the chars were zero width, so cursor wasn't showing them, but I was able to backspace) it worked wonderfully. It was not your code that was the problem, I thi...
Javascript when to use prototypes
...alert("B");
};
myObject.getB(); // This works fine
myObject.getA(); // Error!
var myPrototypeCopy = new myObject();
myPrototypeCopy.getA(); // This works, too.
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Does Java casting introduce overhead? Why?
...ype information at runtime. Most of the time, the compiler will catch type errors for you, but there are cases where you will run into an ArrayStoreException when trying to store an object in an array, but the type does not match (and the compiler didn't catch it). The Java language spec gives the f...