Share your top blunders of any category....
Semantics? Syntax?
Frustrating??
Funny?
Lessons?
or what, share it!!

PS: make sure you give insight to have a good visualization of your blunder!

Ohhkaay...

A dot(member access) instead of a comma in a default argument function messes me up! ..C++

void func(tagger* t1, tagger* t2 = NULL)

I passed a call func(ttt,tag)

instead of func(ttt.tag)

which should have been ttt->tag
QtCreator converts . and -> appropriately... so I get lazy to using -> at times...

Well, it compiled an kept giving me seg faults!! till I almost threw the library away... only to discover my mistake weeks later with a debugger (stack tracing)...

System trashing

I wrote a small numerical program of large 2D double array with a high amount of iterations and had memory leaking at each iteration till it used up 80% of my 2GB RAM!

I was surprised Windows didn't complain, it was instead paging other processes!!!

I also recall, I once wanted to demonstrate a small text editor I wrote following a QtSDK example.... to my friends.
I failed to compile it! I couldn't figure it out and they laughed... then the following day, it compiled! thats how I learned about ENVIRONMENT variables and profiles

I always misplace dot(.) and plus(+) for concatenation in php and javascript

remembered miss placing '}' on a while loop which results into an infinite loop.. Only to run it on my browser and .....

using an uninitialized pointer. this gets me alot.

well for starters, my variable naming style is funny..i just call anything....
a
a2
a21
yyyy
yyyyz

* Forgetting to properly initialize every class.
* Forgetting to use 'this-> or self.' to refer to every variable in object oriented programming.Many more..

₱®ÌИСΞ:
well for starters, my variable naming style is funny..i just call anything....
a
a2
a21
yyyy
yyyyz

this is funny.

lordZOUGA:
this is funny.

lol yea...but of recent i do search and replace after writing

Of recent. . .
For easy search, uncomment, or deletion... Using regex

I start and end my debug lines with a comment. Starting at #qaz and end with #wsx..

(look at your keyboard(US Layout))