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by: Andrew Dalke |
last post by:
Here's a proposed Q&A for the FAQ based on a couple recent
threads. Appropriate comments appreciated
X.Y: Why doesn't Python have macros like in Lisp or Scheme?
Before answering that, a clarification on what 'macro' means.
A Lisp macro is a way of modifying code when that code is first
defined. It can rearrange the structure of the code, and add and
remove parts of it. Unlike C's #define macro language, Lisp
macros understand the...
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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: Eric Lilja |
last post by:
Using a macro, can I change what type an object is being cast to?
I know, the initial respone to question might be an instinctive "ugly, don't
even think about it!" or "don't use macros at all", but I still would like
to know because I am trying to encapsulate a third-party C-based
callback-oriented gui toolkit inside C++ classes and I would like to try
something.
So say you have:
long some_address = some_valid_address;
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by: Spiro Trikaliotis |
last post by:
Hello,
assume I define a macro like
#if <somecondition>
# define MACRO(_x, _y) _x
#else
# define MACRO(_x, _y) _y
#endif
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by: Mason |
last post by:
I'm having some problems converting VBA for Word 2000 to code that
VB.Net understands. I recorded a macro in Word to add numbering (a.
b. c.) to my paragraphs. I managed to translate quite a bit of it,
but I'm having trouble with two pieces:
ListGalleries - I can't find any way to make VB.Net understand this.
When I do a mouseover, the error message it gives is, "Interface
'Word.ListGalleries' cannot be indexed because it has no...
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by: sounak |
last post by:
How could we get a macro name from a macro value
such that
in a header file
#define a 100
#define b 200
now the source file will be such that
the user gives 100
then the value is outputted as a
the user gives 200
then the value is outputted as b
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by: fei.liu |
last post by:
#define ONCFILE_ERR1(funcname, name) \
{ \
#ifdef DEBUG\
cerr << __FILE__ << ":" << __LINE__ << " duplicated call to " <<
funcname << " " << name << endl; \
#endif \
}
I want to have conditional macros inside a macro. When I compile this
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by: Remo |
last post by:
Hi All
I Have Quation About Macro's plz help
why do we have # symbol before any macro line #define STOP 0 ...
why con't we use the any other symbol like $, @,,
plz answer if any one knows reason.
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by: krbyxtrm |
last post by:
Hi
is there a way to 'manage' function execution using macros?
#define MY_CALL_MACRO(MacroName)
{ g_MacroStack.push_back(MacroName);
<some code here...>}
such that when i use the macro like this:
MY_CALL_MACRO("MyMacroName")
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by: pedroalves |
last post by:
Hi all,
This is not a question about how to #define COMMA ,
Please keep reading.
Recently in binutils, we introduced a macro like this:
#define STRING_COMMA_LEN(STR) \
(STR), ((STR) ? sizeof (STR) - 1 : 0)
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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: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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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: 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: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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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: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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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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