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PostgreSQL function for last inserted ID
...s some TRIGGER (or RULE) that, on insertion into persons table, makes some extra insertions in other tables... then LASTVAL will probably give us the wrong value. The problem can even happen with CURRVAL, if the extra insertions are done intto the same persons table (this is much less usual, but the...
How do you determine the ideal buffer size when using FileInputStream?
...buffer size. If you pick a size that's too small, you'll waste time doing extra I/O operations and extra function calls. If you pick a size that's too big, you'll start seeing a lot of cache misses which will really slow you down. Don't use a buffer bigger than your L2 cache size.
...
String formatting: % vs. .format vs. string literal
...aving to be compatible with Python 2.5
To answer your second question, string formatting happens at the same time as any other operation - when the string formatting expression is evaluated. And Python, not being a lazy language, evaluates expressions before calling functions, so in your log.deb...
Why do assignment statements return a value?
...operty of the assignment operator is used is reading lines from a file...
string line;
while ((line = streamReader.ReadLine()) != null)
// ...
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Decorators with parameters?
..., a new function object.
All of foo's metadata is overridden, notably docstring and function name.
>>> print(foo)
<function _pseudo_decor.<locals>.ret_fun at 0x10666a2f0>
functools.wraps gives us a convenient method to "lift" the docstring and name to the returned function....
SQL Client for Mac OS X that works with MS SQL Server [closed]
.../Java/Extensions). Whichever driver you pick, make sure you add it to the "Extra Class Path" list for the MSSQL driver, then pick the class name for the driver at the bottom of the same dialog.
– outis
Feb 5 '11 at 13:45
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How do I find files with a path length greater than 260 characters in Windows?
...-Object {
$filePath = $_.FullName
$length = $_.FullNameLength
$string = "$length : $filePath"
# Write to the Console.
if ($writeToConsoleAsWell) { Write-Host $string }
#Write to the file.
$stream.WriteLine($string)
}
$stream.Close()
...
How can I upload files asynchronously?
...'), // The file inputs containing the files to send.
data: { msg: 'Some extra data you might need.'}
}).done(function(){
console.log("Success: Files sent!");
}).fail(function(){
console.log("An error occurred, the files couldn't be sent!");
});
Plugins
Bifröst is just a small wrapper that...
What does a colon following a C++ constructor name do? [duplicate]
...or base/member initializer list
class MyClass {
public :
MyClass(std::string& arg) {
member_ = arg;
}
std::string& member_;
};
The only correct way is:
class MyClass {
public :
MyClass(std::string& arg)
: member_(arg)
{
}
std::string&...
How to obtain a Thread id in Python?
... @CharlesAnderson beware, the python docs on Thread.name say "name - A string used for identification purposes only. It has no semantics. Multiple threads may be given the same name. The initial name is set by the constructor."
– drevicko
Dec 4 '12 at 6:10
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