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How large should my recv buffer be when calling recv in the socket library
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For streaming protocols such as TCP, you can pretty much set your buffer to any size. That said, common values that are powers of 2 such as 4096 or 8192 are recommended.
If there is more data then what your buffer, it will simply be saved in the kernel for your next call to recv....
Android TextView with Clickable Links: how to capture clicks?
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Based upon another answer, here's a function setTextViewHTML() which parses the links out of a HTML string and makes them clickable, and then lets you respond to the URL.
protected void makeLinkClickable(SpannableStringBuilder strBuilder, final URLSpan span)
{
int ...
How do I run a Python program?
...fy your head). For our example something like,
> cd C:\Documents and Settings\Gregg\Desktop\pyscripts
try:
> python first.py
If you get this message:
'python' is not recognized as an
internal or external command, operable
program or batch file.
then python (the interpreter pr...
Hiding user input on terminal in Linux script
... @electron Nothing in the man page actually suggests that -s sets the text color to the same as the the background color. It just "echoes silently". ss64.com/bash/read.html Silent mode. If input is coming from a terminal, characters are not echoed.
– Andreas Won...
Returning a boolean from a Bash function
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if ! $(exit $status); then
echo "some_command failed"
fi
Notice how setting a status variable demystifies the meaning of $?. (Of course you know what $? means, but someone less knowledgeable than you will have to Google it some day. Unless your code is doing high frequency trading, show some ...
How to get all Errors from ASP.Net MVC modelState?
...given so far, you can get exceptions occuring without error messages being set, so to catch all problems you really need to get both the ErrorMessage and the Exception.
String messages = String.Join(Environment.NewLine, ModelState.Values.SelectMany(v => v.Errors)
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Regex select all text between tags
...ures: 1 for the full match & 1 for the capture group. Each additional set of parenthesis adds a additional capture. You just have to know how to retrieve both captures in whatever language you're working with.
– rbsdca
May 5 '18 at 18:11
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Algorithm to get the excel-like column name of a number
I'm working on a script that generate some Excel documents and I need to convert a number into its column name equivalent. For example:
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Elegant way to search for UTF-8 files with BOM?
For debugging purposes, I need to recursively search a directory for all files which start with a UTF-8 byte order mark (BOM). My current solution is a simple shell script:
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Exit a Script On Error
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If you put set -e in a script, the script will terminate as soon as any command inside it fails (i.e. as soon as any command returns a nonzero status). This doesn't let you write your own message, but often the failing command's own mes...