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Stored procedure slow when called from web, fast from Management Studio
...he assumption is that no rows will be returned, SQL Server settles for the Index Seek.
The problem was that I had parameters which could be left null and if they were passed as null the would be initialised with a default value.
create procedure dbo.procedure
@dateTo datetime = null
begin
...
git add . vs git commit -a
...hanges from all known files (i.e. all files that are already listed in the index)
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Difference between shared objects (.so), static libraries (.a), and DLL's (.so)?
... and shared objects are just different terms for the same thing - Windows calls them DLLs, while on UNIX systems they're shared objects, with the general term - dynamically linked library - covering both (even the function to open a .so on UNIX is called dlopen() after 'dynamic library').
They are ...
Test for existence of nested JavaScript object key
...bj /*, level1, level2, ... levelN*/) {
var args = Array.prototype.slice.call(arguments, 1);
for (var i = 0; i < args.length; i++) {
if (!obj || !obj.hasOwnProperty(args[i])) {
return false;
}
obj = obj[args[i]];
}
return true;
}
var test = {level1:{level2:{level3:'leve...
What's the difference between ConcurrentHashMap and Collections.synchronizedMap(Map)?
...for newer developers. See: ibm.com/developerworks/java/library/j-jtp07233/index.html to understand that even ConcurrentHashMap is not fully thread-safe from external data-races. (eg: 1 thread removes a value and another later tries check if it is present and to put it if not. That is a data race co...
ADB Install Fails With INSTALL_FAILED_TEST_ONLY
... the play store.
As stated here: https://developer.android.com/studio/run/index.html
Note: The Run button builds an APK with testOnly="true", which means
the APK can only be installed via adb (which Android Studio uses). If
you want a debuggable APK that people can install without adb, sel...
How to make a class JSON serializable
...t;>> magic(f)
'{"fname": "/foo/bar"}'
In that case you can merely call json.dumps(f.__dict__).
If you want more customized output then you will have to subclass JSONEncoder and implement your own custom serialization.
For a trivial example, see below.
>>> from json import JSONE...
Find current directory and file's directory [duplicate]
...tive to the current working directory and is not changed by an os.chdir() call.)
To get the current working directory use
import os
cwd = os.getcwd()
Documentation references for the modules, constants and functions used above:
The os and os.path modules.
The __file__ constant
os.path.rea...
Linking R and Julia?
...he package is on CRAN.
https://cran.r-project.org/web/packages/JuliaCall/index.html
https://github.com/Non-Contradiction/JuliaCall
The usage of the package is like this:
library(JuliaCall)
julia <- julia_setup()
julia_command("a = sqrt(2)"); julia_eval("a")
julia_eval("sqrt(2)")
julia_call("...
What is the JSF resource library for and how should it be used?
...
Actually, all of those examples on the web wherein the common content/file type like "js", "css", "img", etc is been used as library name are misleading.
Real world examples
To start, let's look at how existing JSF implementati...