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What is the difference between a reference type and value type in c#?
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I found it easier to understand the difference of the two if you know how computer allocate stuffs in memory and know what a pointer is.
Reference is usually associated with a pointer. Meaning the memory address where your variable reside is actually holding another memory address of the ...
Autoincrement VersionCode with gradle extra properties
I'm building an Android app with gradle. Until now I used the Manifest file to increase the versionCode, but I would like to read the versionCode from an external file and depending if it is the release flavor or the debug flavor increase the versionCode. I tried the extra properties, but you can't ...
How to use a variable to specify column name in ggplot
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From the release notes of ggplot2 V3.0.0 :
aes() now supports quasiquotation so that you can use !!, !!!, and
:=. This replaces aes_() and aes_string() which are now
soft-deprecated (but will remain around for a long time).
The idiomatic way now would be to convert ...
MVC Razor view nested foreach's model
...his view TModel
will always be of the type ViewModels.MyViewModels.Theme.
Now, the next argument is a bit tricky. So lets look at an invocation
@Html.TextBoxFor(model=>model.SomeProperty);
It looks like we have a little lambda, And if one were to guess the signature, one might think that the ...
MySQL: multiple tables or one table with many columns?
...r if I separate the tables in this manner to improve the performance? I'll now go read about the wiki that you mentioned :)
– Xavier_Ex
Mar 19 '12 at 17:45
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.NET obfuscation tools/strategy [closed]
...ly, to IL, to C# code and have it compiled again with very little effort.
Now with .Net 3.5 I'm not at all sure. Try decompiling a 3.5 assembly; what you get is a long long way from compiling.
Add the optimisations from 3.5 (far better than 1.1) and the way anonymous types, delegates and so on ar...
Understanding the meaning of the term and the concept - RAII (Resource Acquisition is Initialization
...nvalid state. it already makes life easier before we even use the object.
Now, let us have a look at temporary objects:
void CopyFileData(FileHandle source, FileHandle dest);
void Foo()
{
CopyFileData(FileHandle("C:\\source"), FileHandle("C:\\dest"));
}
There are three error cases to handle...
How do I automatically update a timestamp in PostgreSQL
...update_modified_column()
RETURNS TRIGGER AS $$
BEGIN
NEW.modified = now();
RETURN NEW;
END;
$$ language 'plpgsql';
Apply the trigger like this:
CREATE TRIGGER update_customer_modtime BEFORE UPDATE ON customer FOR EACH ROW EXECUTE PROCEDURE update_modified_column();
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What's the bad magic number error?
...s -- this didn't directly help me figure out my problem, but it's nice to know the answer anyways!
– Noah
Feb 5 '09 at 3:36
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How to get a variable name as a string in PHP?
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Actually now that I've tested my code, my code always returned 'var' because it's being used in the function. When I use $GLOBALS instead, it returns the correct variable name for some reason. So I'll change the above code to use $GLO...