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When to use IList and when to use List
I know that IList is the interface and List is the concrete type but I still don't know when to use each one. What I'm doing now is if I don't need the Sort or FindAll methods I use the interface. Am I right? Is there a better way to decide when to use the interface or the concrete type?
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How to add minutes to my Date
...lang3.time package
int addMinuteTime = 5;
Date targetTime = new Date(); //now
targetTime = DateUtils.addMinutes(targetTime, addMinuteTime); //add minute
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Select first row in each GROUP BY group?
...ndex-only scans is in development for Postgres 14. See here and here.)
For now, there are faster query techniques to substitute for this. In particular if you have a separate table holding unique customers, which is the typical use case. But also if you don't:
Optimize GROUP BY query to retrieve la...
How to format a Java string with leading zero?
...g.format("%0"+ (9 - "Apple".length() )+"d%s",0 ,"Apple").substring(0,8); . Now you wont have this exception.
– Abhinav Puri
Jan 8 '17 at 7:25
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Xcode 'Build and Archive' menu item disabled
...cause for some reason the build configuration was set to MAC 64 bit (dont know how it got there...) , returned it to IOS and it got enabled again.
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How do you force Visual Studio to regenerate the .designer files for aspx/ascx files?
...context menu for as(c/p)x files. When this is done you should see that you now have a *.Designer.cs file available and your controls within the Design HTML will be available for your control.
PS: This should not be done in debug mode, as not everything is "recompiled" when debugging.
Some people h...
How can mixed data types (int, float, char, etc) be stored in an array?
...eger int_;
real real_;
} record;
enum types { INVALID, INT, REAL };
Now it may appear that we're repeating ourselves, and we are. But consider that this definition is likely to be isolated to a single file. But we've eliminated the noise of specifiying the intermediate .val. before you get to...
Vim for Windows - What do I type to save and exit from a file?
...typed git commit -a instead of git commit -am "My commit message" , and now I'm viewing my CMD prompt filled with the file version of my commit message ("Please enter the commit message for your..."). I've added my message to the top, but now I can't figure out how to save and leave. I tried to p...
REST vs JSON-RPC? [closed]
...ervice implementation without breaking clients:
Clients are required to know procedure names;
Procedure parameters order, types and count matters. It's not that easy to change procedure signatures(number of arguments, order of arguments, argument types etc...) on server side without breaking clien...
IOCTL Linux device driver [closed]
...IN_MAGIC 'P'
#define NUM 0
#define PAUSE_PRIN __IO(PRIN_MAGIC, NUM)
and now use ioctl as
ret_val = ioctl(fd, PAUSE_PRIN);
The corresponding system call in the driver module will receive the code and pause the printer.
__IOW(MAGIC, SEQ_NO, TYPE) MAGIC and SEQ_NO are the same as above, and TYP...