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PHP: Storing 'objects' inside the $_SESSION
...n:
Whether you save objects in $_SESSION, or reconstruct them whole cloth based on data stashed in hidden form fields, or re-query them from the DB each time, you are using state. HTTP is stateless (more or less; but see GET vs. PUT) but almost everything anybody cares to do with a web app require...
What does |= (ior) do in Python?
...1):
01010
10000
-----
11010
(3) Return the result in the given type, e.g. base 10, decimal:
>>> int(0b11010)
26
The internal binary comparison means we can apply the latter to integers in any base, e.g. hex and octal:
>>> c = 0xa # 10
&g...
Visual Studio: How to “Copy to Output Directory” without copying the folder structure?
...ry to the root folder VS2017:
<ItemGroup Condition="'$(Platform)' == 'x64'">
<None Include="Libs\x64\**" Link="\%(Filename)%(Extension)" CopyToOutputDirectory="PreserveNewest" />
</ItemGroup>
<ItemGroup Condition="'$(Platform)' == 'x86'">
<None Include="Libs\x86\*...
What is a vertical tab?
...what was the exact specification of VT? What did it actually do? I assume, based on your description, that it moved the imaginary "cursor" vertically down to the next "vertical tab" position. But did it also return the cursor to the beginning of the line? Or did it keep the X position of the cursor ...
Is gcc's __attribute__((packed)) / #pragma pack unsafe?
...self is safe, but how the packed members are used can be unsafe. Older ARM-based CPUs didn't support unaligned memory accesses either, newer versions do but I know Symbian OS still disallows unaligned accesses when running on these newer versions (the support is turned off).
– ...
Which version of C# am I using
...ger the case. The latest C# compiler determines a default language version based on your project's target framework or frameworks..... NET Framework version all, C# language version default: C# 7.3. The language version is now dynamic. If you create a project today in VS2019 targeting .NET Framewor...
Deep copy of a dict in python
...
Python 2 or 3:
Python 3.2 (r32:88445, Feb 20 2011, 21:30:00) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import copy
>>> my_dict = {'a': [1, 2, 3], 'b': [4, 5, 6]}
>>> my_copy = copy.deepcopy(my_dict)
&g...
Optional Parameters with C++ Macros
...atform, at least tested for
GNU/Linux + GCC (GCC 4.9.2 on CentOS 7.0 x86_64)
GNU/Linux + CLANG/LLVM, (CLANG/LLVM 3.5.0 on CentOS 7.0 x86_64)
OS X + Xcode, (XCode 6.1.1 on OS X Yosemite 10.10.1)
Windows + Visual Studio, (Visual Studio 2013 Update 4 on Windows 7 SP1 64 bits)
For the lazies, just ...
Rename Pandas DataFrame Index
...0
B 1 25
2 35
Name: val, dtype: int64
In [28]: x.index = x.index.set_names('foo', level=1)
In [29]: x
Out[29]:
year foo prod
1 A 1 10
2 20
B 1 15
2 25
2 A 1 20
2 30...
How can I connect to MySQL in Python 3 on Windows?
...sing ActiveState Python 3 on Windows and wanted to connect to my MySQL database.
I heard that mysqldb was the module to use.
I can't find mysqldb for Python 3.
...