Difference between revisions of "Programming"

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==Stupid Library Compile Warnings!!!==
 
==Stupid Library Compile Warnings!!!==
 
===PubSubClient===
 
===PubSubClient===
<code>.pio/libdeps/SugarBush_SS_Climate_BME280/PubSubClient/src/PubSubClient.cpp: In member function 'boolean PubSubClient::publish_P(const char*, const uint8_t*, unsigned int, boolean)':</code>
+
<code>
 
+
.pio/libdeps/SugarBush_SS_Climate_BME280/PubSubClient/src/PubSubClient.cpp: In member function 'boolean PubSubClient::publish_P(const char*, const uint8_t*, unsigned int, boolean)':
<code>.pio/libdeps/SugarBush_SS_Climate_BME280/PubSubClient/src/PubSubClient.cpp:523:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]</code>
+
.pio/libdeps/SugarBush_SS_Climate_BME280/PubSubClient/src/PubSubClient.cpp:523:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 
+
     return (rc == expectedLength);
<code>     return (rc == expectedLength);</code>
+
                   ^
 
+
.pio/libdeps/SugarBush_SS_Climate_BME280/SimpleTimer/SimpleTimer.cpp: In member function 'void SimpleTimer::run()':
<code>                   ^</code>
+
.pio/libdeps/SugarBush_SS_Climate_BME280/SimpleTimer/SimpleTimer.cpp:66:60: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 
+
             if (current_millis - prev_millis[i] >= delays[i]) {
<code>.pio/libdeps/SugarBush_SS_Climate_BME280/SimpleTimer/SimpleTimer.cpp: In member function 'void SimpleTimer::run()':</code>
+
</code>
 
 
<code>.pio/libdeps/SugarBush_SS_Climate_BME280/SimpleTimer/SimpleTimer.cpp:66:60: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]</code>
 
 
 
<code>             if (current_millis - prev_millis[i] >= delays[i]) {</code>
 
  
 
==Troubleshooting==
 
==Troubleshooting==

Revision as of 17:11, 29 March 2021

Atom as a full IDE

bash

Dialogs

Some Links

C

C++

(Apparently, a language designed to make C programmers lose their minds...)

Converting numbers to strings

Problem Solving

  • Error] cannot pass objects of non-trivially-copyable type 'std::string {aka class std::basic_string<char>}' through '…'

Processing

JavaScript

Arduino (Language)

Data Type Conversions

char* to String

char *message = "Hello";
String myString = String(message);

String to char*

Messing about with strings & not Strings

http://www.cplusplus.com/reference/cstring/

Specifically: strcat

Memory Saving

PROGMEM

Stupid Library Compile Warnings!!!

PubSubClient

.pio/libdeps/SugarBush_SS_Climate_BME280/PubSubClient/src/PubSubClient.cpp: In member function 'boolean PubSubClient::publish_P(const char*, const uint8_t*, unsigned int, boolean)': .pio/libdeps/SugarBush_SS_Climate_BME280/PubSubClient/src/PubSubClient.cpp:523:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]      return (rc == expectedLength);                    ^ .pio/libdeps/SugarBush_SS_Climate_BME280/SimpleTimer/SimpleTimer.cpp: In member function 'void SimpleTimer::run()': .pio/libdeps/SugarBush_SS_Climate_BME280/SimpleTimer/SimpleTimer.cpp:66:60: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]              if (current_millis - prev_millis[i] >= delays[i]) {

Troubleshooting

When trying to compile things on a Linux machine...

You get silly-ass errors like fatal error: stdio.h: No such file or directory or other files missing that just don't make ANY sense...

  • sudo apt update
  • sudo apt install --reinstall build-essential

'Coz sumpin' borked yer compiler install...