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How do I efficiently iterate over each entry in a Java Map?
...
Map<String, String> map = ...
for (Map.Entry<String, String> entry : map.entrySet()) {
System.out.println(entry.getKey() + "/" + entry.getValue());
}
...
Get User's Current Location / Coordinates
...list file
<key>NSLocationWhenInUseUsageDescription</key>
<string>Description</string>
<key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
<string>Description</string>
<key>NSLocationAlwaysUsageDescription</key>
<string>Descrip...
Linux - Replacing spaces in the file names
...
got the below error tr: two strings must be given when translating mv: missing file argument Try `mv --help' for more information.
– Mithun Sreedharan
Nov 27 '09 at 5:31
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How add context menu item to Windows Explorer for folders [closed]
...cted file to your custom program
More customization:
Add icon: add a string value named icon for key created at step 1 with value matching an icon resource path. You can also provide an integer arguments to specify which icon to use. Example: %SystemRoot%\System32\shell32.dll,3
Display only on...
Finding the index of an item in a list
...the index-based methods for me, since I'm looking to gather the indices of strings using 'startswith" , and I need to gather multiple occurrences. Or is there a way to use index with "startswith" that I couldn't figure out
– Tupelo Thistlehead
Oct 26 '17 at 19:...
Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
... in Visual Studio 2017 see the end of this answer)
Consider this code:
String s = null;
Console.WriteLine(s.Length);
This will throw a NullReferenceException in the second line and you want to know why .NET doesn't tell you that it was s that was null when the exception was thrown.
To underst...
What are naming conventions for MongoDB?
...o name a collection few precautions to be taken :
A collection with empty string (“”) is not a valid collection name.
A collection name should not contain the null character because this defines the end of collection name.
Collection name should not start with the prefix “system.” as this i...
How do you pass a function as a parameter in C?
...s with 'typedef' apprach? This version looks much cleaner though and lacks extra statements too. pretty much starter here.
– Abhinav Gauniyal
Feb 22 '15 at 7:04
3
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What happens to an open file handle on Linux if the pointed file gets moved or deleted
...ntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <strings.h>
#include <stdio.h>
void perror_and_exit() {
perror(NULL);
exit(1);
}
int main(int argc, char *argv[]) {
int fd;
if ((fd = open("data", O_RDONLY)) == -1) {
perror_and_exit();
}
char buf[5]...
Adding Core Data to existing iPhone project
...h the applicationDoumentsDirectory method should return NSURL instead of NSString.
– NSRover
May 9 '14 at 12:29
9
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