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Which is faster: while(1) or while(2)?
...GCC: (tdm64-2) 4.8.1"
The important bits being:
.L2:
jmp .L2
I can't read assembly very well, but this is obviously an unconditional loop. The jmp instruction unconditionally resets the program back to the .L2 label without even comparing a value against true, and of course immediately does so...
What is std::promise?
I'm fairly familiar with C++11's std::thread , std::async and std::future components (e.g. see this answer ), which are straight-forward.
...
Why aren't programs written in Assembly more often? [closed]
...I am a compiler.
I just scanned thousands of lines of code while you were reading this sentence. I browsed through millions of possibilities of optimizing a single line of yours using hundreds of different optimization techniques based on a vast amount of academic research that you would spend year...
find -exec a shell function in Linux?
...
find . | while read file; do dosomething "$file"; done
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Spring Test & Security: How to mock authentication?
...thority("ROLE_USER"),
new SimpleGrantedAuthority("PERM_FOO_READ")
));
User managerUser = new UserImpl("Manager User", "manager@company.com", "password");
UserActive managerActiveUser = new UserActive(managerUser, Arrays.asList(
new SimpleGrant...
Running Bash commands in Python
...nd you end up copy/pasting multiple lines of code ... which conveniently already exist in the standard library as a set of higher-level wrapper functions for various purposes, which are presented in more detail in the following.
Here's a paragraph from the documentation:
The recommended approac...
How to execute a stored procedure within C# program
...ter("@CustomerID", custId));
// execute the command
using (SqlDataReader rdr = cmd.ExecuteReader()) {
// iterate through results, printing each to console
while (rdr.Read())
{
Console.WriteLine("Product: {0,-35} Total: {1,2}",rdr["ProductName"],rdr["Total...
How to set DOM element as the first child?
...nd(newChild) // [newChild, child1, child2]
This is modern JS! It is more readable than previous options. It is currently available in Chrome, FF, and Opera.
The equivalent for adding to the end is append, replacing the old appendChild
parent.append(newChild) // [child1, child2, newChild]
Advance...
What is a simple command line program or script to backup SQL server databases?
...BASE mydatabase TO DISK='C:\tmp\db.bak' WITH FORMAT"
You'll also want to read the documentation on BACKUP and RESTORE and general procedures.
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Exif manipulation library for python [closed]
...iv2: http://exiv2.org/) is a mature, open-source C++ library that supports reading and writing metadata to many image types (JPEG, PNG, TIFF and many raw formats), understands standard (Xmp, IPTC and Exif) and non-standard metadata ("Makernotes"), and runs on multiple platforms (Windows, Linux, and,...