Other questions have touched on many true aspects of symbols, but I’ll try explaining it from another angle. Symbols are names Unlike most programming languages, Clojure makes a distinction between things and the names of things. In most languages, if I say something like var x = 1, then it is correct and complete to … Read more
There are many ways to do this. Your lack of context makes it impossible to elect a “best” way. Here’s a few ayways. Kernel.const_get(:Bob) eval(:Bob.to_s) Kernel.const_get(:bob.to_s.capitalize)
You don’t need to use -O0 or -g switches. You need to do one of following: put android:debuggable=”true” to the <application> tag in AndroidManifest.xml file use NDK_DEBUG=1 after ndk-build put APP_OPTIM := debug in Application.mk file Doing anyone of these three things will automatically use -O0 and -g switches. Can you try running gdb manually, … Read more
That’s the last argument of the previous command. From the documentation: !!:$ designates the last argument of the preceding command. This may be shortened to !$. Remark. If you want to play around with Bash’s history, I suggest you turn on the shell option histverify like so: shopt -s histverify (you can also put it … Read more
Check your import files, it may that you’re importing a .m file. #import “TimeModel.m”
Try dumpbin.exe. MSDN dumpbin.exe reference.
Use LaTeX Style. For Example: $^\circ$ Text would produce °Text See the matplotlib documentation for more information about printing (especially mathematical expression). In your case the code has to be: plt.xlabel(‘Manufactured Ply Angle $^\circ$’) The TeX part of the expression must be enclosed by dollar signs “$”.
Use hash rocket syntax: h = { “a” => 123 } #=> {“a”=>123} h[‘a’] #=> 123
Incrementing / Decrementing Operators ++ increment operator — decrement operator Example Name Effect ——————————————————————— ++$a Pre-increment Increments $a by one, then returns $a. $a++ Post-increment Returns $a, then increments $a by one. –$a Pre-decrement Decrements $a by one, then returns $a. $a– Post-decrement Returns $a, then decrements $a by one. These can go before or … Read more
In Ruby 2.3(.0), these are all the same: {:”a” => 1} {“a”: 1}, {:a => 1} {a: 1} They all translate to the same thing: a is a symbol in all these cases. {“a”=>1} is different: a is a string in this case.