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What are the mechanics of short string optimization in libc++?
This answer gives a nice high-level overview of short string optimization (SSO). However, I would like to know in more detail how it works in practice, specifically in the libc++ implementation:
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What do linkers do?
...0,%rsi
11: 00 00 00
which should move the address of the hello world string into the rsi register, which is passed to the write system call.
But wait! How can the compiler possibly know where "Hello world!" will end up in memory when the program is loaded?
Well, it can't, specially after we ...
Mismatched anonymous define() module
... up if
You have an anonymous define ("modules that call define() with no string ID") in its own script tag (I assume actually they mean anywhere in global scope)
You have modules that have conflicting names
You use loader plugins or anonymous modules but don't use require.js's optimizer to bundle ...
Python ElementTree module: How to ignore the namespace of XML files to locate matching element when
... you can handle multiple namespaces and namespace aliases:
from io import StringIO # for Python 2 import from StringIO instead
import xml.etree.ElementTree as ET
# instead of ET.fromstring(xml)
it = ET.iterparse(StringIO(xml))
for _, el in it:
prefix, has_namespace, postfix = el.tag.partition...
Convert any object to a byte[]
...for the .Net platform
Binary Serialization
XML Serialization: Produces a string which is easily convertible to a byte[]
ProtoBuffers
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Convert a Unicode string to a string in Python (containing extra symbols)
How do you convert a Unicode string (containing extra characters like £ $, etc.) into a Python string?
9 Answers
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What is the real overhead of try/catch in C#?
...esentation layer, and was often called for 100s of objects.
bool HasRight(string rightName, DomainObject obj) {
try {
CheckRight(rightName, obj);
return true;
}
catch (Exception ex) {
return false;
}
}
void CheckRight(string rightName, DomainObject obj) {
if (!_user.Rights.Co...
How to handle click event in Button Column in Datagridview?
... {
//TODO - Button Clicked - Execute Code Here
string x=myDataGridView.Rows[e.RowIndex].Cells[3].Value.ToString();
Form1 myform = new Form1();
myform.rowid= (int)x;
myform.Show();
}
}
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PHP function to make slug (URL string)
I want to have a function to create slugs from Unicode strings, e.g. gen_slug('Andrés Cortez') should return andres-cortez . How should I do that?
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Why use sprintf function in PHP?
...tf which means you can do much more than just inserting variable values in strings.
For instance, specify number format (hex, decimal, octal), number of decimals, padding and more. Google for printf and you'll find plenty of examples. The wikipedia article on printf should get you started.
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