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define() vs. const
... that anyway? One common application is to check whether the constant is already defined:
if (!defined('FOO')) {
define('FOO', 'BAR');
}
const accepts a static scalar (number, string or other constant like true, false, null, __FILE__), whereas define() takes any expression. Since PHP 5.6 const...
Why do most C developers use define instead of const? [duplicate]
...onst in C does not mean something is constant. It just means a variable is read-only.
In places where the compiler requires a true constant (such as for array sizes for non-VLA arrays), using a const variable, such as fieldWidth is just not possible.
...
Why is debugging better in an IDE? [closed]
... circumstances to allow you to analyse the stack and variables.
View the thread context in multi-threaded applications, which can be difficult to achieve with tracing (as the traces from different threads will be interleaved in the output).
In summary, print statements are (generally) static and y...
Generating HTML email body in C#
... bit clunky to use and some developers like the markup itself to be easily read but perversly HtmlTextWriter's choices with regard indentation is a bit wierd.
In this example you can also use XmlTextWriter quite effectively:-
writer = new StringWriter();
XmlTextWriter xml = new XmlTextWriter(write...
Invoke(Delegate)
...w C# Controls work
Controls in Windows Forms are bound to a specific thread and are not
thread safe. Therefore, if you are calling a control's method from a
different thread, you must use one of the control's invoke methods to
marshal the call to the proper thread. This property can be use...
How to set versionName in APK filename using gradle?
... @PHPirate: almost works: Error:(34, 0) Cannot set the value of read-only property 'name'
– Mooing Duck
Dec 10 '17 at 2:11
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Is there a way for non-root processes to bind to “privileged” ports on Linux?
...ther option like port forwarding.
Resources:
capabilities(7) man page. Read this long and hard if you're going to use capabilities in a production environment. There are some really tricky details of how capabilities are inherited across exec() calls that are detailed here.
setcap man page
"Bind...
What are 'closures' in .NET?
...
There's always more to learn :) I've just finished reading CLR via C# - very informative. Other than that, I usually ask Marc Gravell for WCF/binding/expression trees, and Eric Lippert for C# language things.
– Jon Skeet
Jan 9 '09 at 16:...
What is the use of static constructors?
... with a type (or any other per-type operations) - useful in particular for reading required configuration data into readonly fields, etc.
It is run automatically by the runtime the first time it is needed (the exact rules there are complicated (see "beforefieldinit"), and changed subtly between CLR...
How to send a message to a particular client with socket.io
... client, listen for emits from the server called 'receivedMessage', and by reading the data you can handle who it came from and the message that was sent.
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