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PDO MySQL: Use PDO::ATTR_EMULATE_PREPARES or not?
... schemas need special construction to make maximum use of the cache. Often application-level caching ends up being necessary anyway in the long run.
Native prepares doesn't make any difference for security. The pseudo-prepared statements will still escape query parameter values, it will just be done...
What would be C++ limitations compared C language? [closed]
...u are working in. (In some cases this is possible with a few extern "C" wrapper functions, depending on how template/inline a C++ library is.)
Taking the first C file in a project I'm working on, this is what happens if you just swap gcc std=c99 for g++:
sandiego:$ g++ -g -O1 -pedantic -mfpmath=...
Change color of PNG image via CSS?
...e that you insert your hex color value and it returns the needed filter to apply this color to png
CSS filter generator to convert from black to target hex color
for example i needed my png to have the following color #1a9790
then you have to apply the following filter to you png
filter: invert(...
What is a semaphore?
...For example, to limit the number of simultaneous calls to a database in an application.
Here is a very pedagogic example in C# :-)
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;
namespace TheNightclub
{
public class Program
{
public stat...
How to send data to local clipboard from a remote SSH session
... + pivotal_workstation::xquartz recipe, but you don't have to)
Run XQuartz.app
Open XQuartz Preferences (+,)
Make sure "Enable Syncing" and "Update Pasteboard when CLIPBOARD changes" are checked
ssh -X remote-host "echo 'hello from remote-host' | xclip -selection clipboard"
...
When do Java generics require
...ally instantiated via reflection and used based on the key. (A distributed app where the client doesn't have the server classes available, just the key of which class to use to do the server side work).
– Yishai
May 22 '09 at 14:21
...
WebSockets vs. Server-Sent events/EventSource
...ata to the browser and receive data from the browser. A good example of an application that could use websockets is a chat application.
SSE connections can only push data to the browser. Online stock quotes, or twitters updating timeline or feed are good examples of an application that could benefi...
Reading/writing an INI file
...
Maybe a more traditional default would be per-application (not per-assembly) .ini files like Path.GetFullPath(IniPath ?? Path.ChangeExtension(Application.ExecutablePath, ".ini")).
– Eugene Ryabtsev
Apr 21 '16 at 10:44
...
How does facebook, gmail send the real time notification?
...n a given interval (perhaps every few seconds), to check if something has happened. However, this can be pretty network intensive, and you often make pointless requests, because nothing has happened.
The way Facebook does it is using the comet approach, rather than polling on an interval, as soon a...
How to display unique records from a has_many through relationship?
...g to learn from nonetheless (actually I may use this somewhere else in the app). What are your thoughts on performance for the various approaches mentioned on this page?
– Andy Harvey
May 3 '11 at 12:31
...