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Why does “return list.sort()” return None, not the list?
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It's interesting that if an entry is added to a list, either a.append('x'), or a.extend('x) you can't chain sort() on the end either. It has to be split into 2 lines. It would have been nicer had the methods returned the list! d...
Can I mask an input text in a bat file?
... cmd.exe scripts (such as if you have a lot of code that you don't want to convert), you can use the same trick.
First, modify the cmd script so it calls Powershell rather than CScript:
@echo off
for /f "delims=" %%i in ('powershell -file getpwd.ps1') do set passwd=%%i
The Powershell script is e...
Parallel.ForEach vs Task.Factory.StartNew
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The first is a much better option.
Parallel.ForEach, internally, uses a Partitioner<T> to distribute your collection into work items. It will not do one task per item, but rather batch this to lower the overhead involved.
The second option will schedule a single Task pe...
Shortest distance between a point and a line segment
...t notice someone had supplied a 3D version. @RogiSolorzano, you'll need to convert the lat,long coordinates into x,y,z coordinates in 3-space first.
– Grumdrig
Dec 24 '17 at 5:42
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What happens when a duplicate key is put into a HashMap?
...n key (or null if none present), so you can determine what was there and maintain a reference if necessary.
More information here: HashMap Doc
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Why am I not getting a java.util.ConcurrentModificationException in this example?
...ecific case, first off, i don't think final is a way to go considering you intend to modify the list past declaration
private static final List<Integer> integerList;
Also consider modifying a copy instead of the original list.
List<Integer> copy = new ArrayList<Integer>(integer...
Android LocationClient class is deprecated but used in documentation
...ority(LocationRequest.PRIORITY_HIGH_ACCURACY);
mLocationRequest.setInterval(1000); // Update location every second
LocationServices.FusedLocationApi.requestLocationUpdates(
mGoogleApiClient, mLocationRequest, this);
}
@Override
public void onConnectionSu...
How to force LINQ Sum() to return 0 while source collection is empty
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That's win for me:
int Total = 0;
Total = (int)Db.Logins.Where(L => L.id == item.MyId).Sum(L => (int?)L.NumberOfLogins ?? 0);
In my LOGIN table, in field NUMBEROFLOGINS some values are NULL and others have an INT number. I sum here tota...
How do you implement a private setter when using an interface?
I've created an interface with some properties.
2 Answers
2
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How to track down a “double free or corruption” error
...olerant version of malloc, which will cause your program to abort at the point where the double free is done.
You can set this from gdb by using the set environment MALLOC_CHECK_ 2 command before running your program; the program should abort, with the free() call visible in the backtrace.
see the...