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What are the best practices for using a GUID as a primary key, specifically regarding performance?
...lication that uses GUID as the Primary Key in almost all tables and I have read that there are issues about performance when using GUID as Primary Key. Honestly, I haven't seen any problem, but I'm about to start a new application and I still want to use the GUIDs as the Primary Keys, but I was thin...
What is App.config in C#.NET? How to use it?
...nherit settings from global configuration files, e.g. the machine.config.
Reading from the App.Config
Connection strings have a predefined schema that you can use. Note that this small snippet is actually a valid app.config (or web.config) file:
<?xml version="1.0"?>
<configuration>
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What's the difference between and in servlet
...d, if a JSR-303 Provider is on the classpath
Adds support for support for reading and writing XML, if JAXB is on the classpath (HTTP message conversion with @RequestBody/@ResponseBody)
Adds support for reading and writing JSON, if Jackson is o n the classpath (along the same lines as #5)
contex...
Compile time string hashing
I have read in few different places that using C++11's new string literals it might be possible to compute a string's hash at compile time. However, no one seems to be ready to come out and say that it will be possible or how it would be done.
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How to write asynchronous functions for Node.js
...(43) have run. So we print 43 followed by 42.
You should probably do some reading on the event loop.
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How is TeamViewer so fast?
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@Daniel: start by reading the articles about “UDP hole punching“ and “STUN“ on wikipedia.
– Axel
Dec 16 '15 at 20:51
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Best way to store password in database [closed]
...le this is not horrible, it is best to add unique salts to every password. Read this for more.
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Does anyone know what the new Exit icon is used for when editing storyboards using Xcode 4.5?
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Thanks, I was reading this just to learn what the "Green Exit" was about, only to find out it resolve a problem for me. I had 2 view controllers separated by a TabBar controller and a navigation controller, and "Pop" didn't work to return...
How do I empty an array in JavaScript?
..."strict mode" in ECMAScript 5 because the length property of an array is a read/write property.
Method 3 (as suggested by Anthony)
A.splice(0,A.length)
Using .splice() will work perfectly, but since the .splice() function will return an array with all the removed items, it will actually return a...
Send file using POST from a Python script
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From: https://requests.readthedocs.io/en/latest/user/quickstart/#post-a-multipart-encoded-file
Requests makes it very simple to upload Multipart-encoded files:
with open('report.xls', 'rb') as f:
r = requests.post('http://httpbin.org/post', f...