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Ruby, Difference between exec, system and %x() or Backticks
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system
The system method calls a system program. You have to provide the command as a string argument to this method. For example:
>> system("date")
Wed Sep 4 22:03:44 CEST 2013
=> true
The invoked program will use the current STDIN, STDOUT and STDERR objects of your Ruby prog...
PHP Error handling: die() Vs trigger_error() Vs throw Exception
...error reporting (by using different levels of error messages) and you can hide those errors from end-users (using set_error_handler()) but still have them be displayed to you during testing.
Also trigger_error() can produce non-fatal messages important during development that can be suppressed in p...
What is the full path to the Packages folder for Sublime text 2 on Mac OS Lion
...this question anywhere so I can only assume I'm doing something really stupid but...
5 Answers
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C# Iterate through Class properties
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@Cordell, how did you do that? I tried property.GetValue() but it asks for an object as parameter.
– user7792598
Aug 16 '18 at 19:52
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How can I set the Sender's address in Jenkins?
...l without writing custom scripts to send email.
– insider
Mar 13 '19 at 10:30
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Explanation of JSHint's Bad line breaking before '+' error
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It's a style guide to avoid statements that could be liable to assumptions about automatic semicolon insertion.
The idea is that you make it clear by the end of a line whether the expression ends there or could be continued on the next lin...
What is the difference between “expose” and “publish” in Docker?
...XPOSE nor -p, the service in the container will only be accessible from inside the container itself.
2) If you EXPOSE a port, the service in the container is not accessible from outside Docker, but from inside other Docker containers. So this is good for inter-container communication.
3) If you EX...
Different class for the last element in ng-repeat
... answered Sep 17 '15 at 4:51
aidanaidan
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Counting the Number of keywords in a dictionary in python
...I'd like to note that you can also go for the values (I know the question didn't ask it) with len(yourdict.values())
– ntk4
Sep 23 '16 at 5:49
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What is a Memory Heap?
...at the heap is the portion of memory where dynamically allocated memory resides (i.e. memory allocated via malloc). Memory allocated from the heap will remain allocated until one of the following occurs:
The memory is free'd
The program terminates
If all references to allocated memory are lost ...