control-flow Questions
2
Solved
Is there a way to conditionally (through a script task or anything else), control the flow of program in SSIS?
Currently I have a package that would create 5 different excel sheets (through Execu...
Kinna asked 21/12, 2012 at 17:59
6
Solved
I have an IEnumerable<T>. I want to do one thing for each item of the collection, except the last item, to which I want to do something else. How can I code this neatly? In Pseudocode
foreac...
Tritanopia asked 24/5, 2012 at 10:32
40
Solved
Given the following code (that doesn't work):
while True:
# Snip: print out current state
while True:
ok = get_input("Is this ok? (y/n)")
if ok.lower() == "y": break 2 # Thi...
Rejoin asked 10/10, 2008 at 0:2
11
Solved
I have been reading about Optionals in Swift, and I have seen examples where if let is used to check if an Optional holds a value, and in case it does – do something with the unwrapped value.
Howe...
Oversubscribe asked 27/8, 2015 at 18:23
9
Solved
for the following code
a =func()
if a != None:
b.append(a)
a can be assigned to None, is there a way to avoid the if statement and only use one line of code?
original problem is the following...
Sheriff asked 11/1, 2012 at 20:58
3
Solved
Suppose I have a piece of Perl code like:
foreach my $x (@x) {
foreach my $y (@z) {
foreach my $z (@z) {
if (something()) {
# I want to break free!
}
# do stuff
}
# do stuff
}
# do stuf...
Endres asked 14/9, 2010 at 11:45
15
Solved
What sorts of methods exist for prematurely exiting an if clause?
There are times when I'm writing code and want to put a break statement inside of an if clause, only to remember that those can o...
Anabolite asked 15/1, 2010 at 5:20
6
Solved
I want to check a condition inside a loop and execute a block of code when it's first met. After that, the loop might repeat but the block should be ignored. Is there a pattern for that? Of course ...
Pulverulent asked 17/7, 2013 at 13:33
6
Solved
Consider this:
loop {
let data = match something() {
Err(err) => {
warn!("An error: {}; skipped.", err);
continue;
},
Ok(x) => x
};
let data2 = match something_else() {
Er...
Romilda asked 11/4, 2018 at 22:11
4
Solved
In Jest, beforeAll() is supposed to run before beforeEach().
The problem is that when I use an async callback for beforeAll(), Jest doesn't wait for the callback to finish before going on to before...
Amin asked 14/2, 2021 at 8:58
2
create is a method that should return true only when everything went as expected and false otherwise. I'm going for error codes style control flow.
class TransferOperator
class TransferError <...
Femmine asked 6/10, 2014 at 21:35
51
Assuming I have this pseudo-code:
bool conditionA = executeStepA();
if (conditionA){
bool conditionB = executeStepB();
if (conditionB){
bool conditionC = executeStepC();
if (conditionC){
...
...
Journal asked 26/6, 2014 at 12:25
1
Solved
We can return a value from loops with break, for example:
fn main() {
let mut counter = 0;
let result = loop {
counter += 1;
if counter == 10 {
break counter * 2;
}
};
println!("The...
Kalmia asked 10/7, 2022 at 10:45
6
Solved
Idiomatic for/else in rust:
In Python, I can use for/else to check whether or not a for loop terminated at a break statement or finished 'normally':
prod = 1
for i in range(1, 10):
prod *= i
if p...
Seawright asked 4/7, 2022 at 6:56
4
I know that there are ways to automatically generate a CFG (C ontrol F low G raph) from source code. However, from what I understand, those methods give me a visual graph - an image. I can't really...
Teledu asked 9/1, 2013 at 1:8
2
Solved
I'm trying to understand the walrus assignment operator.
Classic while loop breaks when condition is reassigned to False within the loop.
x = True
while x:
print('hello')
x = False
Why doesn't t...
Concentrate asked 30/12, 2020 at 22:51
8
Solved
If I’ve got a bunch of chained guard let statements, how can I diagnose which condition failed, short of breaking apart my guard let into multiple statements?
Given this example:
guard let keypat...
Quintet asked 6/6, 2016 at 18:23
7
I know a while loop can do anything a for loop can, but can a for loop do anything a while loop can?
Please provide an example.
Pershing asked 3/10, 2009 at 17:39
6
Solved
I recently wrote this line of code: for(i in seq_len(exponent)){out<-squareMat%*%out}. Clearly, i is never used and I just wanted to say "exponent times, do out<-squareMat%*%out". W...
Thea asked 4/2, 2021 at 13:19
2
Solved
The merge and switch may not be open to use for general users. And I have searched the source code:
switch
merge
There is a description in merge:
Returns the value of an available element ...
Detrude asked 4/11, 2017 at 6:5
6
Solved
Is it possible to tell if there was an exception once you're in the finally clause? Something like:
try:
funky code
finally:
if ???:
print('the funky code raised')
I'm looking to make somethi...
Clavius asked 4/3, 2018 at 19:42
2
Solved
Wikipedia has a definition for a control flow graph. I've also heard terminology thrown around referring to 'call (flow?) graph', but can't find any relevant resources. What is the relationship bet...
Perspiratory asked 27/3, 2012 at 11:58
2
Solved
I don't see the reason why we use if let and just usual if.
In Rust book, chapter 6.3, the sample code is below:
let some_u8_value = Some(0u8);
if let Some(3) = some_u8_value {
println!("three");...
Quevedo asked 11/1, 2020 at 7:5
2
At some point, Intel will begin shipping CPUs that support CET(Control-flow Enforcement Technology), which adds two instructions ENDBR64 and ENDBR32.
These two will be encoded as
F3 0F 1E FA for...
Briard asked 13/5, 2019 at 21:40
0
I'm still hoping to receive an answer to the question(s) below. For clarity, I've added a few comments.
The code below generates different segments of a circle through (Bezier)paths, which togethe...
Levitical asked 12/10, 2019 at 4:32
1 Next >
© 2022 - 2024 — McMap. All rights reserved.