Compiling
Nobody has said anything yet. Be the first.
Compiling
Programming humour and developer memes
The universal excuse. Memes, shitposts and the joke that only lands if you have used git. Keep it kind.
42 members
5 posts
Created Aug 2026
Community rules
Punch up, not down
Laugh at tools, deadlines and yourself. Not at beginners.
Bring the detail
Versions, error text, what you already tried. "It does not work" is not a question anyone can answer.
No drive-by self promotion
Share your own work when it answers the thread. A link with no context is a advert, and it gets removed.
Discussions
- Primary
Help for beginners and people learning new languages. No gatekeeping.
Showing 5 posts.
Posts in t/compiling
Java: why == works for 127 but not for 1000;
Hello, I am CS student in Thessaloniki, learning Java for my exam. I found something strange and my professor only said "look it up" xD Integer a = 127; Integer b = 127; System.out.println(a == b); // true Integer c = 1000; Integer d = 1000; System.out.println(c == d); // false ;; Why the same code gives different result; Is it a bug in my JDK (Temurin 21); Should I always use equals for Integer; Thank you!
- Can confirm interview question. Also nasty in real life: two Long IDs from Hibernate compared with == in a service. Worked in testing because IDs were small, failed in production once the IDs went past 127. True story from a bank project.
C# async void in a button click handler, the exception just disappears?
Hello, I have a question to you. In my Ausbildung company we have a WinForms tool (yes WinForms xD). I made a button that loads customers from our internal API. When the API is down, nothing happens. No error, no MessageBox, the grid just stays empty. private async void btnLoad_Click(object sender, EventArgs e) { try { LoadData(); } catch (Exception ex) { MessageBox.Show(ex.Message); } } private async Task…
Accepted answer
Your Ausbilder is right, with one exception: event handlers. Their signature is fixed, so async void is allowed there and only there. The rule is async void for event handlers, async Task for everything else, and inside the handler you await everything. Your bug is one missing word. You call LoadData() without await. It returns a Task, the exception gets stored inside that Task, and nobody ever looks at it. Your try/catch finished before the request even failed. Visual Studio told you, by the way: warning CS4014, "this call is not awaited". private async void btnLoad_Click(object sender, EventArgs e) { btnLoad.Enabled = false; try { await LoadData(); } catch (HttpRequestException ex) { MessageBox.Show("API nicht erreichbar: " + ex.Message, "Fehler", MessageBoxButtons.OK, MessageBoxIcon.Error); } finally { btnLoad.Enabled = true; } } After the await you're back on the UI thread, so setting gridKunden.DataSource is safe. Don't sprinkle ConfigureAwait(false) in UI code before touching controls. And set _http.Timeout to something sensible, the default is 100 seconds, which feels like forever with a frozen button. Last thing: turn on TreatWarningsAsErrors in the csproj. That warning list is a to-do list, not wallpaper.
- Same story here. My first DSA practice was on a cyber cafe PC at 20 rupees an hour. Hardware is the least important thing on the list.
Returning to Java after 7 years (Java 8 to Java 21). What should I relearn first?
Good morning all. It is 5.30 am here, the kids are not awake yet, so I am posting before the chaos starts 🙂 I was a Java developer at a service company till 2018: mostly Java 8, Spring 4 with XML configuration, and Struts on one old project (kindly do not laugh). After a seven year break I am preparing to return to work. Now I see Java 21 everywhere: records, var, sealed classes, pattern matching, virtual threads.…
Accepted answer
Welcome back Meenal! You already did the hardest part (actually starting). My order, from what I use daily on client projects: 1. var (Java 10). 10 minutes. Local variables only. 2. Records (16). Your DTOs become one line: record AccountDto(String iban, long balance) {} 3. Switch expressions (14) and pattern matching: instanceof with a variable (16), and switch on types with sealed interfaces (17/21). Example: sealed interface Payment permits Upi, Card, NetBanking {} record Upi(String vpa) implements Payment {} record Card(String last4) implements Payment {} record NetBanking(String bank)…- 7 year gap in 2026 lol. market is brutal, freshers with 500 leetcode are jobless. good luck i guess
Binary search on the answer: when nothing is sorted but you can still binary search
Students learn binary search as "find x in a sorted array" and then get stuck on questions where nothing is sorted. The trick is that you are not searching the array. You are searching the answer . The problem You have packages with weights w[i] that must be shipped in order. A ship carries them over D days, loading packages in order each day until the next one would exceed its capacity. What is the minimum capacity…
- ok this one is going in the notes. "feasible(x) is monotonic" is the sentence i was missing for 3 days on koko bananas