![]() ![]() It seems that scons will generate a file version. #define ZSIM_BUILDVERSION \\""no git repo\\""" >' versionFile) #define ZSIM_BUILDVERSION \\""`python misc/gitver.py`\\""" >' versionFile) ZSIM_BUILDVERSION is a macro which is defined in SConstruct if os.path.exists(".git"):Įnv.Command(versionFile, allSrcs , The line that has this error is info("Starting zsim, built %s (rev %s)", ZSIM_BUILDDATE, ZSIM_BUILDVERSION) We got what we wanted, neighbor IP worked out automatically from IP assigned to local interface.īut, the longer I look at it the more I don't like feel of this logic and manipulation preceding the actual neighbor statements.While trying to compile this program with scons, we faced this error build/opt/zsim_harness.cpp:315:5: error: stray '\' in programīuild/opt/zsim_harness.cpp:315:5: error: stray '#' in programīuild/opt/zsim_harness.cpp: In function 'int main(int, char**)':īuild/opt/zsim_harness.cpp:310:24: error: 'ZSIM_BUILDVERSION' was not declared in this scopeīuild/opt/zsim_harness.cpp:315:5: error: expected ')' before 'n'īuild/opt/zsim_harness.cpp:315:5: error: 'ZSIM_BUILDVERSION' was not declared in this scope Īnd this is the result of rendering: router bgp 65001 But some macros come with the C language itself and which we can directly use in the C program. Till now, we have seen how to define the macros, their types and how to use them. Now you have only one place where the banner needs to be changed and anything else using this macro will reflect the changes automatically. The macro which takes an argument and acts as a function. Not only will you reduce mistakes that can happen during copying but you also make future updates to the banner much easier. Instead of copy pasting text of the banner across your templates you can create macro and have it render the banner. Take for example device banners, these tend to be static but are used over and over again. You might benefit from macro even when all it does is rendering static text. Macros are great for creating reusable components when we find ourselves copy pasting around same lines of text and code. Microsoft released the following security and nonsecurity updates for Office in June 2023. You can essentially treat macro as one big evaluation statement that also allows parametrization. Inside of macros we can use any of the Jinja features and constructs. Definition: Harmonic mean of precision and recall for a more balanced summarization of model performance. Macros can take arguments or be used without them. We use them to encapsulate logic used to perform repeatable actions. Macros are similar to functions in many programming languages. ![]() GitHub repository with resources for this post.Jinja2 Tutorial - Part 6 - Include and Import.Jinja2 Tutorial - Part 4 - Template filters.Jinja2 Tutorial - Part 3 - Whitespace control.But, I don't want to specify the keyword 'global' in all the functions where I use the variables. Jinja2 Tutorial - Part 2 - Loops and conditionals I am using python for one of my projects, and i want to define some variables like define in C so that if i want to change the value i can change it only at one place.Jinja2 Tutorial - Part 1 - Introduction and variable substitution 1Introduction 2Documentation Toggle Documentation subsection 2.1online courses or guides 2.2e-Bibliography 3Unified Modeling Language (UML) 4Preamble 5Developing Toggle Developing subsection 5.We'll talk about what macros are, why we would use them and we'll see some examples to help us appreciate this feature better. The showexpanded macro python from macropy.caseclasses import macros, case from acing import macros, showexpanded with showexpanded: case class. SPONSORED CONTENT Strings are Arrays Like many other popular programming languages, strings in Python are arrays of bytes representing unicode characters. Welcome to the part 5 of Jinja2 Tutorial where we learn all about macros. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |