#rustchallenge — Public Fediverse posts

🦀#RustChallenge

This will throw a compilation error

Fix this code in a short or better way

(Btw, this might compile in the future and work. Because, It was said that shortcomings of rustc & will be fixed in future)
#rustlang #rust

🦀#RustChallenge

This will throw a compilation error

Fix this code in a short or better way

(Btw, this might compile in the future and work. Because, It was said that shortcomings of rustc & will be fixed in future)
#rustlang #rust

🦀#RustChallenge

This will throw a compilation error

Fix this code in a short or better way

(Btw, this might compile in the future and work. Because, It was said that shortcomings of rustc & will be fixed in future)
#rustlang #rust

🦀#RustChallenge

This will throw a compilation error

Fix this code in a short or better way

(Btw, this might compile in the future and work. Because, It was said that shortcomings of rustc & will be fixed in future)
#rustlang #rust

🦀#RustChallenge

This will throw a compilation error

Fix this code in a short or better way

(Btw, this might compile in the future and work. Because, It was said that shortcomings of rustc & will be fixed in future)
#rustlang #rust

#RustChallenge

What will be result?

A. Both X & Y will give error
B. Y will give error & X will print "Kernel" and "Astra"
C. X will print "Kernel" & Y will print "Kernel" and "Astra"
D. both prints "Kernel" & "Astra"

(it was shared in ThePrimeagen stream by one of viewers)

#rustlang #rust

#RustChallenge

What will be result?

A. Both X & Y will give error
B. Y will give error & X will print "Kernel" and "Astra"
C. X will print "Kernel" & Y will print "Kernel" and "Astra"
D. both prints "Kernel" & "Astra"

(it was shared in ThePrimeagen stream by one of viewers)

#rustlang #rust

#RustChallenge

What will be result?

A. Both X & Y will give error
B. Y will give error & X will print "Kernel" and "Astra"
C. X will print "Kernel" & Y will print "Kernel" and "Astra"
D. both prints "Kernel" & "Astra"

(it was shared in ThePrimeagen stream by one of viewers)

#rustlang #rust

#RustChallenge

What will be result?

A. Both X & Y will give error
B. Y will give error & X will print "Kernel" and "Astra"
C. X will print "Kernel" & Y will print "Kernel" and "Astra"
D. both prints "Kernel" & "Astra"

(it was shared in ThePrimeagen stream by one of viewers)

#rustlang #rust

#RustChallenge

What will be result?

A. Both X & Y will give error
B. Y will give error & X will print "Kernel" and "Astra"
C. X will print "Kernel" & Y will print "Kernel" and "Astra"
D. both prints "Kernel" & "Astra"

(it was shared in ThePrimeagen stream by one of viewers)

#rustlang #rust

🦀 #RustChallenge

Will it print Hello World?

A. No, it will give compilation error

B. Yes, it will print `Hello World`

C. No, it will panic at runtime but prints 1

This challenge was brought to you by @tuxmain

#rustlang #rust #developer

🦀 #RustChallenge

Will it print Hello World?

A. No, it will give compilation error

B. Yes, it will print `Hello World`

C. No, it will panic at runtime but prints 1

This challenge was brought to you by @tuxmain

#rustlang #rust #developer

🦀 #RustChallenge

Will it print Hello World?

A. No, it will give compilation error

B. Yes, it will print `Hello World`

C. No, it will panic at runtime but prints 1

This challenge was brought to you by @tuxmain

#rustlang #rust #developer

🦀 #RustChallenge

Will it print Hello World?

A. No, it will give compilation error

B. Yes, it will print `Hello World`

C. No, it will panic at runtime but prints 1

This challenge was brought to you by @tuxmain

#rustlang #rust #developer

🦀 #RustChallenge

Will it print Hello World?

A. No, it will give compilation error

B. Yes, it will print `Hello World`

C. No, it will panic at runtime but prints 1

This challenge was brought to you by @tuxmain

#rustlang #rust #developer

New #RustChallenge

What's the result?

#crablang #rust #rustlang #cplusplus #awesomeRust

New #RustChallenge

What's the result?

#crablang #rust #rustlang #cplusplus #awesomeRust

New #RustChallenge

What's the result?

#crablang #rust #rustlang #cplusplus #awesomeRust

New #RustChallenge

What's the result?

#crablang #rust #rustlang #cplusplus #awesomeRust

@AstraKernel I have a #RustChallenge for you.

What will be the output of the following code:

- A) nothing, it's not valid rust code 😞
- B) nothing, it will crash runtime 💩
- D) something nice 😻
- E) undefined behavior 💀
#rust #cpp #unsafe #gnu #crablang #imsorry #nice

@AstraKernel I have a #RustChallenge for you.

What will be the output of the following code:

- A) nothing, it's not valid rust code 😞
- B) nothing, it will crash runtime 💩
- D) something nice 😻
- E) undefined behavior 💀
#rust #cpp #unsafe #gnu #crablang #imsorry #nice

@AstraKernel I have a #RustChallenge for you.

What will be the output of the following code:

- A) nothing, it's not valid rust code 😞
- B) nothing, it will crash runtime 💩
- D) something nice 😻
- E) undefined behavior 💀
#rust #cpp #unsafe #gnu #crablang #imsorry #nice

@AstraKernel I have a #RustChallenge for you.

What will be the output of the following code:

- A) nothing, it's not valid rust code 😞
- B) nothing, it will crash runtime 💩
- D) something nice 😻
- E) undefined behavior 💀
#rust #cpp #unsafe #gnu #crablang #imsorry #nice

@AstraKernel I have a #RustChallenge for you.

What will be the output of the following code:

- A) nothing, it's not valid rust code 😞
- B) nothing, it will crash runtime 💩
- D) something nice 😻
- E) undefined behavior 💀
#rust #cpp #unsafe #gnu #crablang #imsorry #nice

🦀 #RustChallenge

What will be the output in "Nightly"?

A. Compilation error (already mentioned nightly so it might run, but will you trust me? 😜)

B. prints "return"

C. prints "!"

D. prints nothing

It's been a long time since I posted (found this in discord)

#rustlang #rust

🦀 #RustChallenge

What will be the output in "Nightly"?

A. Compilation error (already mentioned nightly so it might run, but will you trust me? 😜)

B. prints "return"

C. prints "!"

D. prints nothing

It's been a long time since I posted (found this in discord)

#rustlang #rust

🦀 #RustChallenge

What will be the output in "Nightly"?

A. Compilation error (already mentioned nightly so it might run, but will you trust me? 😜)

B. prints "return"

C. prints "!"

D. prints nothing

It's been a long time since I posted (found this in discord)

#rustlang #rust

🦀 #RustChallenge

What will be the output in "Nightly"?

A. Compilation error (already mentioned nightly so it might run, but will you trust me? 😜)

B. prints "return"

C. prints "!"

D. prints nothing

It's been a long time since I posted (found this in discord)

#rustlang #rust

🦀 #RustChallenge

What will be the output in "Nightly"?

A. Compilation error (already mentioned nightly so it might run, but will you trust me? 😜)

B. prints "return"

C. prints "!"

D. prints nothing

It's been a long time since I posted (found this in discord)

#rustlang #rust

#RustChallenge

What will happen?

Credits: @timClicks (Author of Rust in Action book)

#rustlang #rust

#RustChallenge

What will happen?

Credits: @timClicks (Author of Rust in Action book)

#rustlang #rust

#RustChallenge

What will happen?

Credits: @timClicks (Author of Rust in Action book)

#rustlang #rust

#RustChallenge

What will happen?

Credits: @timClicks (Author of Rust in Action book)

#rustlang #rust

#RustChallenge

What will happen?

Credits: @timClicks (Author of Rust in Action book)

#rustlang #rust

🦀 #RustChallenge:

What is the output?

A. Both X and Y prints "True" and "False"

B.
Only Y prints "True" and "False"
X just prints "False"

C. Gives compilation error

D. Runtime error

i know i know, sorry... :P

#rustlang #rust

🦀 #RustChallenge:

What is the output?

A. Both X and Y prints "True" and "False"

B.
Only Y prints "True" and "False"
X just prints "False"

C. Gives compilation error

D. Runtime error

i know i know, sorry... :P

#rustlang #rust

🦀 #RustChallenge:

What is the output?

A. Both X and Y prints "True" and "False"

B.
Only Y prints "True" and "False"
X just prints "False"

C. Gives compilation error

D. Runtime error

i know i know, sorry... :P

#rustlang #rust

🦀 #RustChallenge:

What is the output?

A. Both X and Y prints "True" and "False"

B.
Only Y prints "True" and "False"
X just prints "False"

C. Gives compilation error

D. Runtime error

i know i know, sorry... :P

#rustlang #rust

🦀 #RustChallenge:

What is the output?

A. Both X and Y prints "True" and "False"

B.
Only Y prints "True" and "False"
X just prints "False"

C. Gives compilation error

D. Runtime error

i know i know, sorry... :P

#rustlang #rust

🦀#RustChallenge

What is the output?

A. Prints memory address 3 times

B.
"Rust"
Memory Address
Memory Address

C.
"R"
"u"
"st"

D.
"Rust"
"Rust"
"Rust"

#rustlang #rust

🦀#RustChallenge

What is the output?

A. Prints memory address 3 times

B.
"Rust"
Memory Address
Memory Address

C.
"R"
"u"
"st"

D.
"Rust"
"Rust"
"Rust"

#rustlang #rust

🦀#RustChallenge

What is the output?

A. Prints memory address 3 times

B.
"Rust"
Memory Address
Memory Address

C.
"R"
"u"
"st"

D.
"Rust"
"Rust"
"Rust"

#rustlang #rust

🦀#RustChallenge

What is the output?

A. Prints memory address 3 times

B.
"Rust"
Memory Address
Memory Address

C.
"R"
"u"
"st"

D.
"Rust"
"Rust"
"Rust"

#rustlang #rust

🦀#RustChallenge

What is the output?

A. Prints memory address 3 times

B.
"Rust"
Memory Address
Memory Address

C.
"R"
"u"
"st"

D.
"Rust"
"Rust"
"Rust"

#rustlang #rust

✨ Rust challenge explained

Ans: C. It never reaches the prints statement. It goes in an infinite loop 😲

But, how? Let's break down

👉 End value is 0xfffffff which is 268435455.0. it is not very important here. So let's remove it and simplify the code with a constant 20,000,000.0 end value

👉 `f` value stops increasing(round upped) after value 16777216.0 when you add just 1.0 🤯

👉 To know why,you have to understand how the f32 is stored. Float is not stored as simple as integer

👉 f32 uses IEEE 754 format to store the value

👉 Larger f32 number loses accuracy

In a 32 bit float (any language not just rust):

👉 1st bit is used for sign identification (positive or negative)
👉 Following 8 bits used for exponent
👉 Next 23 bits used for storing mantissa 🙃

You can see more here, how it is calculated
https://youtu.be/8afbTaA-gOQ

(Continued 👇)

#rustlang #RustChallenge #programmers #rust

✨ Rust challenge explained

Ans: C. It never reaches the prints statement. It goes in an infinite loop 😲

But, how? Let's break down

👉 End value is 0xfffffff which is 268435455.0. it is not very important here. So let's remove it and simplify the code with a constant 20,000,000.0 end value

👉 `f` value stops increasing(round upped) after value 16777216.0 when you add just 1.0 🤯

👉 To know why,you have to understand how the f32 is stored. Float is not stored as simple as integer

👉 f32 uses IEEE 754 format to store the value

👉 Larger f32 number loses accuracy

In a 32 bit float (any language not just rust):

👉 1st bit is used for sign identification (positive or negative)
👉 Following 8 bits used for exponent
👉 Next 23 bits used for storing mantissa 🙃

You can see more here, how it is calculated
https://youtu.be/8afbTaA-gOQ

(Continued 👇)

#rustlang #RustChallenge #programmers #rust

✨ Rust challenge explained

Ans: C. It never reaches the prints statement. It goes in an infinite loop 😲

But, how? Let's break down

👉 End value is 0xfffffff which is 268435455.0. it is not very important here. So let's remove it and simplify the code with a constant 20,000,000.0 end value

👉 `f` value stops increasing(round upped) after value 16777216.0 when you add just 1.0 🤯

👉 To know why,you have to understand how the f32 is stored. Float is not stored as simple as integer

👉 f32 uses IEEE 754 format to store the value

👉 Larger f32 number loses accuracy

In a 32 bit float (any language not just rust):

👉 1st bit is used for sign identification (positive or negative)
👉 Following 8 bits used for exponent
👉 Next 23 bits used for storing mantissa 🙃

You can see more here, how it is calculated
https://youtu.be/8afbTaA-gOQ

(Continued 👇)

#rustlang #RustChallenge #programmers #rust

✨ Rust challenge explained

Ans: C. It never reaches the prints statement. It goes in an infinite loop 😲

But, how? Let's break down

👉 End value is 0xfffffff which is 268435455.0. it is not very important here. So let's remove it and simplify the code with a constant 20,000,000.0 end value

👉 `f` value stops increasing(round upped) after value 16777216.0 when you add just 1.0 🤯

👉 To know why,you have to understand how the f32 is stored. Float is not stored as simple as integer

👉 f32 uses IEEE 754 format to store the value

👉 Larger f32 number loses accuracy

In a 32 bit float (any language not just rust):

👉 1st bit is used for sign identification (positive or negative)
👉 Following 8 bits used for exponent
👉 Next 23 bits used for storing mantissa 🙃

You can see more here, how it is calculated
https://youtu.be/8afbTaA-gOQ

(Continued 👇)

#rustlang #RustChallenge #programmers #rust

✨ Rust challenge explained

Ans: C. It never reaches the prints statement. It goes in an infinite loop 😲

But, how? Let's break down

👉 End value is 0xfffffff which is 268435455.0. it is not very important here. So let's remove it and simplify the code with a constant 20,000,000.0 end value

👉 `f` value stops increasing(round upped) after value 16777216.0 when you add just 1.0 🤯

👉 To know why,you have to understand how the f32 is stored. Float is not stored as simple as integer

👉 f32 uses IEEE 754 format to store the value

👉 Larger f32 number loses accuracy

In a 32 bit float (any language not just rust):

👉 1st bit is used for sign identification (positive or negative)
👉 Following 8 bits used for exponent
👉 Next 23 bits used for storing mantissa 🙃

You can see more here, how it is calculated
https://youtu.be/8afbTaA-gOQ

(Continued 👇)

#rustlang #RustChallenge #programmers #rust

🦀 an Interesting #RustChallenge given by @sombrastudios

What will happen?

A) prints "Hello World" instantly
B) prints "Hello World" after 3 seconds
C) never reaches the print statement
D) Compilation error

#rustlang #rust