Extending array to source file from header file in C -

-

is there way extend 1 big array header file source file, , use elements in main program?

array 

byte codes[95][8] = {             255, 255, 255, 255, 255, 255, 255, 255,  255, 255, 134, 255, 255, 255, 255, 255,  255, 143, 255, 143, 255, 255, 255, 255,  235, 128, 235, 143, 235, 255, 255, 255,  237, 213, 128, 213, 219, 255, 255, 255,  157, 155, 247, 226, 220, 255, 255, 255,  201, 112, 170, 221, 250, 255, 255, 255,  255, 175, 129, 255, 255, 255, 255, 255,  255, 227, 221, 190, 255, 255, 255, 255,  255, 190, 221, 227, 255, 255, 255, 255,  235, 247, 193, 247, 235, 255, 255, 255,  247, 247, 193, 247, 247, 255, 255, 255,  255, 250, 249, 255, 255, 255, 255, 255,  247, 247, 247, 247, 247, 255, 255, 255,  255, 252, 252, 255, 255, 255, 255, 255,  253, 251, 247, 239, 223, 255, 255, 255,  193, 186, 182, 174, 193, 255, 255, 255,  255, 222, 128, 254, 255, 255, 255, 255,  222, 188, 186, 182, 206, 255, 255, 255,  189, 190, 174, 150, 185, 255, 255, 255,  };

never define variables in header files. creates linker problems , bad program design. instead, array should declared 

const byte codes[95][8] = { ...

and placed in .c file. can have corresponding .h file 

extern const byte codes[95][8];

include .h file caller , access array.


Comments

Post a Comment

Popular posts from this blog

python - No exponential form of the z-axis in matplotlib-3D-plots -

-
Image
i have similar problem described in how prevent numbers being changed exponential form in python matplotlib figure : i don't want (in special case) weird scientific formatting of axis. problem different have problem @ z -axis. 2-d plots can use ax.get_yaxis().get_major_formatter().set_useoffset(false) . , there no function ax.get_zaxis() what use format z -axis same way? edit: example: from mpl_toolkits.mplot3d import axes3d import numpy np import sys import matplotlib import matplotlib.pyplot pyplot def func(xi, ti): res = 10e3 + np.cos(ti) * np.sin(xi) return res if __name__ == '__main__': timespacing = 20 timestart = 0 timeend = 1 time = np.linspace(timestart, timeend, timespacing) widthspacing = 50 widthstart = 0 widthend = 3 width = np.linspace(widthstart, widthend, widthspacing) reslist = [] matplotlib.rcparams['legend.fontsize'] = 10 fig = pyplot.figure() ax = fig.gca(projection = '3d...
Read more

php - Best Light server (Linux + Web server + Database) for Raspberry Pi -

-
i install web server database on raspberry pi (little computer). computer has 1gb ram. i want know best combination: linux distribution , web server , dbms run local server multiple users minimal latency, use php on server. , best settings performance , not have bugs (memory usage, disable plugin, disable service, etc)? i thought light debian , lighttpd server , sqlite database. solution? i think lighttpd + sqlite great choice. linux distro, debian @ centos or tiny core linux , although i'm not sure of compatibility pi. obviously, can't go wrong raspbian if want use in production , more stable performance, few more pi's , set them in cluster .
Read more

c# - "Newtonsoft.Json.JsonSerializationException unable to find constructor to use for types" error when deserializing class -

-
i developing app in xamarin android. have splash screen serialize class , pass mainactivity using intent . when try deserialize in mainactivity error message : "serializationexception unable find constructor use types" serialization : void loaddata() { currency currency = new currency(this); intent = new intent(this, typeof(mainactivity)); intent.putextra("currency", newtonsoft.json.jsonconvert.serializeobject(currency)); startactivity(intent); } deserialization : cur = newtonsoft.json.jsonconvert.deserializeobject<currency> (intent.getstringextra("currency")); // error here class constructor : public currency(context context) { thiscontext = context; } i began experiencing problem after added parameter context context constructor. has caused this? how can solve it? possible serialize/deserialize class has parameters? you need have empty constructor in currency class in order deserialize it. ...
Read more