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How to modify a global variable within a function in bash?
...e e is set within a subshell, but not the parent shell. There are two ways to pass values from a subshell to its parent. First, you can output something to stdout, then capture it with a command substitution:
myfunc() {
echo "Hello"
}
var="$(myfunc)"
echo "$var"
Gives:
Hello
For a numeri...
Redefining NULL
...
The C standard does not require null pointers to be at the machine's address zero. HOWEVER, casting a 0 constant to a pointer value must result in a NULL pointer (§6.3.2.3/3), and evaluating the null pointer as a boolean must be false. This can be a bit awkward if you r...
Can you add new statements to Python's syntax?
Can you add new statements (like print , raise , with ) to Python's syntax?
13 Answers
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What are MVP and MVC and what is the difference?
... RAD (drag-drop and configure) way of building user interfaces that many tools encourage you are likely to come across three design patterns called Model-View-Controller , Model-View-Presenter and Model-View-ViewModel . My question has three parts to it:
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How do I run a Python program in the Command Prompt in Windows 7?
I'm trying to figure out how to run Python programs with the Command Prompt on Windows 7. (I should have figured this out by now...)
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Difference between a User and a Login in SQL Server
I have recently been running into many different areas of SQL Server that I normally don't mess with. One of them that has me confused is the area of Logins and Users. Seems like it should be a pretty simple topic...
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Use of 'prototype' vs. 'this' in JavaScript?
...ore looking at the differences, the following should be noted:
A constructor's prototype provides a way to share methods and values among instances via the instance's private [[Prototype]] property.
A function's this is set by how the function is called or by the use of bind (not discussed here). ...
How to fix the Hibernate “object references an unsaved transient instance - save the transient insta
...resent in the database. By specifying the above options you tell hibernate to save them to the database when saving their parent.
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How to convert an object to a byte array in C#
I have a collection of objects that I need to write to a binary file.
10 Answers
10
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Add all files to a commit except a single file?
I have a bunch of files in a changeset, but I want to specifically ignore a single modified file. Looks like this after git status :
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