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by: Chris Reedy |
last post by:
For everyone -
Apologies for the length of this message. If you don't want to look
at the long example, you can skip to the end of the message.
And for the Python gurus among you, if you can spare the time, I
would appreciate any comments (including words like evil and disgusting,
if you think they are applicable :-}) on the example here.
Kenny -
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by: mike420 |
last post by:
I think everyone who used Python will agree that its syntax is
the best thing going for it. It is very readable and easy
for everyone to learn. But, Python does not a have very good
macro capabilities, unfortunately. I'd like to know if it may
be possible to add a powerful macro system to Python, while
keeping its amazing syntax, and if it could be possible to
add Pythonistic syntax to Lisp or Scheme, while keeping all
of the...
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by: mike420 |
last post by:
Tayss wrote:
>
> app = wxPySimpleApp()
> frame = MainWindow(None, -1, "A window")
> frame.Show(True)
> app.MainLoop()
>
Why do you need a macro for that? Why don't you just write
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by: michele.simionato |
last post by:
Paul Rubin wrote:
> How about macros? Some pretty horrible things have been done in C
> programs with the C preprocessor. But there's a movememnt afloat to
> add hygienic macros to Python. Got any thoughts about that?
"Movement" seems quite an exaggeration. Maybe 2-3 people made some
experiments, but nobody within the core Python developers seems
to be willing to advocate the introduction of macros.
> Why should you care whether the...
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by: Michael Winter |
last post by:
In a recent post ("About C error" by Victor, 21 Sep 2003), comments were
made about the poster's use of macros. What I would like to know is why
they are considered bad? I'm not referring to their use as 'functions'; I
realise the loss of type-safety and the possible evaluation errors that can
occur. However, what would be the harm with numeric and text literals?
Consider a number that plays a significant role in the implementation of...
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by: Ben Hetland |
last post by:
....in certain cituations they can be useful if not for anything else,
then at least for saving a lot of repetetetetetitititive typing. :-)
Beyond the point of "do something better instead", I'm curious about how
the following syntactical problem can be solved. It should apply equally
to C and C++ as it mainly is a preprocessor-related problem.
I tryed to define something similar to the following example:
...
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by: Stephen Sprunk |
last post by:
On a project I'm working on, I ran across the following macros:
/* assume s is struct stream *, s->p is char, v is unit16_t or uint32_t */
#define in_uint16_le(s,v) { v = *((s)->p++); v += *((s)->p++) << 8; }
#define in_uint32_le(s,v) { in_uint16_le(s,v) \
v += *((s)->p++) << 16; v += *((s)->p++) << 24; }
I'm personally not fond of function-like macros and wanted to turn these
into static inline functions, but I'm having trouble doing...
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by: Emil |
last post by:
Is there any hope that new versions of PHP
will support macros similar to C or C++?
I've searched manual and didn't find anything
except define directive, but it can be used
to define constant values only.
Of course it is not THAT neccessary functionality,
but it could be very useful.
greetz Emil
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by: San |
last post by:
hi there,
I am new to c++ and tryig to learn the basics of the c++ concepts.
While I was reading the templates, I realize that the templates are a
syntax that the compilar expands pased upon the type specified. This is
much similar like a macro expansion in C.
can anyone please explain advantages of one over the other ?
Thanks in advance -
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by: Robert Seacord |
last post by:
When writing C99 code is a reasonable recommendation to use inline
functions instead of macros?
What sort of things is it still reasonable to do using macros? For
example, is it reasonable to write type generic functions macros?
#define CUBE(I) ( (I) * (I) * (I) )
Is there some more concise set of things where inline functions should
be used instead of macros? Multi-statement macros, for example?
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: bsmnconsultancy |
last post by:
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