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What's the difference between “Layers” and “Tiers”?
...e compile the projects we get the respective layer DLL. So we have 3 DLL's now.
Depending upon how we deploy our application, we may have 1 to 3 tiers. As we now have 3 DLL's, if we deploy all the DLL's on the same machine, then we have only 1 physical tier but 3 logical layers.
If we choose to de...
PHP foreach change original array values
...ference (&) is ... controversial. I recommend not using it unless you know why you need it and test the results.
I would recommend doing the following:
foreach ($fields as $key => $field) {
if ($field['required'] && strlen($_POST[$field['name']]) <= 0) {
$fields[$key]...
What is the difference between null and undefined in JavaScript?
I want to know what the difference is between null and undefined in JavaScript.
33 Answers
...
undefined reference to `WinMain@16'
... MessageBox( 0, "Blah blah...", "My Windows app!", MB_SETFOREGROUND );
}
Now let's build it using GNU toolchain (i.e. g++), no special options. Here gnuc is just a batch file that I use for that. It only supplies options to make g++ more standard:
C:\test> gnuc x.cpp
C:\test> objdump -x a...
Inherit docstrings in Python class inheritance
... pass
class Bar(Foo):
@doc_inherit
def foo(self):
pass
Now, Bar.foo.__doc__ == Bar().foo.__doc__ == Foo.foo.__doc__ == "Frobber"
"""
from functools import wraps
class DocInherit(object):
"""
Docstring inheriting method descriptor
The class itself is also used as a ...
What does the explicit keyword mean?
...class will create a compiler error at the function call DoBar (42). It is now necessary to call for conversion explicitly with DoBar (Foo (42))
The reason you might want to do this is to avoid accidental construction that can hide bugs.
Contrived example:
You have a MyString(int size) class with ...
Creating C macro with ## and __LINE__ (token concatenation with positioning macro)
...
@DD: D'oh, fixed now. It needs 2 layers of indirection, not 1.
– Adam Rosenfield
Oct 20 '09 at 21:04
...
Switch on ranges of integers in JavaScript [duplicate]
... the > comparisons, they just make it confusing. By the second case we know that x must not be less than 5, so we might as well not include the overlapping comparisons - they'll just cause confusion later on.
– David Mason
Oct 9 '13 at 23:34
...
What is console.log?
...ve them all in one answer.
Firefox
http://getfirebug.com/
(you can also now use Firefox's built in developer tools Ctrl+Shift+J (Tools > Web Developer > Error Console), but Firebug is much better; use Firebug)
Safari and Chrome
Basically the same.
https://developers.google.com/chrome-dev...
How do I add more members to my ENUM-type column in MySQL?
... of countries which would make for a rather large and awkward enum.
EDIT: Now that I can see your error message:
ERROR 1265 (01000): Data truncated for column 'country' at row 1.
I suspect you have some values in your country column that do not appear in your ENUM. What is the output of the follo...