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When would anyone use a union? Is it a remnant from the C-only days?
...For example, let's say you want to create your own Variant type:
struct my_variant_t {
int type;
union {
char char_value;
short short_value;
int int_value;
long long_value;
float float_value;
double double_value;
void* ptr_value;
}...
JRE 1.7 - java version - returns: java/lang/NoClassDefFoundError: java/lang/Object
...ers.
Windows
To unpack one .pack file (for example rt.pack), run:
"%JAVA_HOME%\bin\unpack200" -r -v rt.pack rt.jar
To recursively unpack all .pack files, from the JRE root run:
for /r %f in (*.pack) do "%JAVA_HOME%\bin\unpack200.exe" -r -q "%f" "%~pf%~nf.jar"
*nix
To unpack one .pack file (...
Why does Razor _layout.cshtml have a leading underscore in file name?
...ving standard files never shared is essential as with current *.config, APP_Code and APP_Data directories. But this logic should sit in a config file somewhere (machine config as default) so it can be overridden. Also these default names of common pages should be configurable (Layout/Error/etc...).
...
A proper wrapper for console.log with correct line number?
...e in FF and Chrome.
Testing in fiddle: http://jsfiddle.net/drzaus/pWe6W/
_log = (function (undefined) {
var Log = Error; // does this do anything? proper inheritance...?
Log.prototype.write = function (args) {
/// <summary>
/// Paulirish-like console.log wrapper. In...
How to access app.config in a blueprint?
...horisation.py which in a package api. I am initializing the blueprint in __init__.py which is used in authorisation.py .
...
Get IP address of visitors using Flask for Python
...est object and then get from this same Request object, the attribute remote_addr.
Code example
from flask import request
from flask import jsonify
@app.route("/get_my_ip", methods=["GET"])
def get_my_ip():
return jsonify({'ip': request.remote_addr}), 200
For more information see the Werkzeu...
How do I sort an observable collection?
... you could use an extension method on the collection itself
var sortedOC = _collection.OrderBy(i => i.Key);
private void doSort()
{
ObservableCollection<Pair<ushort, string>> _collection =
new ObservableCollection<Pair<ushort, string>>();
_collection.Add...
Rails: around_* callbacks
...classes/ActiveRecord/Callbacks.html , but don't understand when the around_* callbacks are triggered in relation to before_* and after_* .
...
How to log source file name and line number in Python
...='%Y-%m-%d:%H:%M:%S',
level=logging.DEBUG)
logger = logging.getLogger(__name__)
logger.debug("This is a debug log")
logger.info("This is an info log")
logger.critical("This is critical")
logger.error("An error occurred")
Generates this output:
2017-06-06:17:07:02,158 DEBUG [log.py:11] Thi...
How to get the error message from the error code returned by GetLastError()?
...rror message has been recorded
LPSTR messageBuffer = nullptr;
size_t size = FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, errorMessageID, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPSTR)&a...