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Maximum packet size for a TCP connection
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The absolute limitation on TCP packet size is 64K (65535 bytes), but in practicality this is far larger than the size of any packet you will see, because the lower layers (e.g. ethernet) have lower packet sizes.
The MTU (Maximum Transmission Unit) for Ethernet, for inst...
How do you detect Credit card type based on number?
...at you make the field wide enough to display 32 characters and allow up to 64; that gives plenty of headroom for expansion.
Here's an image that gives a little more insight:
UPDATE (2014): The checksum method no longer appears to be a valid way of verifying a card's authenticity as noted in the co...
What is the closest thing Windows has to fork()?
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Evan TeranEvan Teran
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Scripting TFS Command Line for Get Latest Version, Check Out and Check in, programmatically
...is: %ProgramFiles%\Microsoft Visual Studio 9.0\Common7\IDE, or on Windows x64: %ProgramFiles(x86)%\Microsoft Visual Studio 10.0\Common7\IDE (depending on Visual Studio version and installation settings).
Example for get:
cd C:\TFS\Arquitectura
"%PathToIde%\TF.exe" get $/Arquitectura/Main /recursiv...
What is the optimal length for an email address in a database?
...er", and the domain part is "example.com".
The local part must not exceed 64 characters and the domain part cannot be longer than 255 characters.
The combined length of the local + @ + domain parts of an email address must not exceed 254 characters. As described in RFC3696 Errata ID 1690.
I got t...
#1071 - Specified key was too long; max key length is 1000 bytes
...e column. INT is always 4 bytes, and it always allows values from -2147483648 to 2147483647. The numeric argument is about padding values during display, which has no effect unless you use the ZEROFILL option.
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How to create permanent PowerShell Aliases
...er users' space.
REMEMBER! The $PsHome path is different between 32bit and 64bit instances of powershell, so you have to consider both environment if you want always to execute the profile code. Usually the paths are C:\Windows\System32\WindowsPowerShell\v1.0 for the 64bit environment and C:\Windows...
javac is not recognized as an internal or external command, operable program or batch file [closed]
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CommonProgramFiles(x86)=C:\Program Files (x86)\Common Files
CommonProgramW6432=C:\Program Files\Common Files
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The most important variable is PATH. It is a list of paths, separated by ;. When a command is entered into cmd, each directory in the list will be scanned for a matching executable.
O...
Open file dialog and select a file using WPF controls and C#
...proketboy I must confess complete confusion as to what you mean by a "pure 64bit desktop application"; could you explain further? My understanding is the Microsoft.Win32 libraries are a managed API to the underlying OS; how they talk to the OS should be of no concern to the rest of my (x64 64bit) ap...
HttpListener Access Denied
...sktopApp
// Generates state and PKCE values.
string state = randomDataBase64url(32);
string code_verifier = randomDataBase64url(32);
string code_challenge = base64urlencodeNoPadding(sha256(code_verifier));
const string code_challenge_method = "S256";
// Creates a redirect URI using an available po...