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Program only crashes as release build — how to debug?
...dinger's Cat" type of problem here -- my program (actually the test suite for my program, but a program nonetheless) is crashing, but only when built in release mode, and only when launched from the command line. Through caveman debugging (ie, nasty printf() messages all over the place), I have det...
Objective-C ARC: strong vs retain and weak vs assign
There are two new memory management attributes for properties introduced by ARC, strong and weak .
8 Answers
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Is there a foreach loop in Go?
Is there a foreach construct in the Go language? Can I iterate over a slice or array using a for ?
8 Answers
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Using ECMAScript 6
I'm looking for a way to run ECMAScript 6 code in my browser's console but most browsers don't support functionality that I'm looking for. For example Firefox is the only browser that supports arrow functions.
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Java: getMinutes and getHours
...of standard java.util.Date classes. Joda Time library has much better API for handling dates.
DateTime dt = new DateTime(); // current time
int month = dt.getMonth(); // gets the current month
int hours = dt.getHourOfDay(); // gets hour of day
See this question for pros and cons of using Jod...
Changing Java Date one hour back
...);
java.util.Date
new Date(System.currentTimeMillis() - 3600 * 1000);
org.joda.time.LocalDateTime
new LocalDateTime().minusHours(1)
Java 8: java.time.LocalDateTime
LocalDateTime.now().minusHours(1)
Java 8 java.time.Instant
// always in UTC if not timezone set
Instant.now().minus(1, Chron...
navigator.geolocation.getCurrentPosition sometimes works sometimes doesn't
So I have a pretty simple bit of JS using the navigator.geolocation.getCurrentPosition jammy.
25 Answers
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Importing from builtin library when module with same name exists
...-in Calendar class from the Python libraries
- When I use from calendar import Calendar it complains because it's trying to load from my module.
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Sleeping in a batch file
...o automate something on a Windows box, I've needed to pause its execution for several seconds (usually in a test/wait loop, waiting for a process to start). At the time, the best solution I could find uses ping (I kid you not) to achieve the desired effect. I've found a better write-up of it here ,...
Flatten an Array of Arrays in Swift
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Just to state this more generally, flatMap is available as of Swift 1.2.
– Mick MacCallum
Apr 24 '15 at 4:56
3
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