On 2016-01-31 23:19, Sigitas wrote:
> Per eilę metų kompe prisirinko daug Visual C++. Gal galima senus 
> išinstaliuoti? Ar tikrai visi reikalingi? Gal tik naujausius palikti?
Čia sau...:( Radau atsakymą:
"
Visual C++ redistributables are components shipped by app developers who 
use Visual C++ to write their software and choose to use Microsoft's 
code inside the component (e.g. sin and cos math functions) instead of 
reinventing the wheel. If one of Visual C++ redistributables is on your 
computer, it is because it is installed alone with one of your apps. 
Uninstalling one Visual C++ redistributable could save you a few 
megabytes of disk space, but you risk breaking an app in doing so.

Visual C++ redistributables do not supersede each other. Some apps may 
be very specific to bind to the exact version of the Visual C++ dlls, 
for example, to make sure the app runs exactly as published. Most apps, 
however, bind to the latest edition of the same major version, as it is 
the default behavior and can benefit from Microsoft's security updates.

There could be multiple versions of Visual C++ redistributables required 
by one app. For example, if an app depending on Visual C++ 2008 
redistributable uses a component depending on Visual C++ 2005 
redistributable, the app's developer must ship both versions of Visual 
C++  redistributables.

On a 64bit computer, the system could have both x86 and x64 editions of 
Visual C++ Redistributables installed, since Visual C++ redistributable 
is a common used component, and it is normal to have both 32bit apps and 
64bit apps (or even apps that contains both 32bit code and 64bit 
code) installed on a 64bit system.

Visual C++ redistributables contain code written by Microsoft, thus 
Microsoft issues security updates for them. Microsoft also ship Visual 
C++ redistributables to developers so they can test their apps against 
the new Visual C++ files, and if their apps are compatible with the 
update, they can choose to include the new version of Visual C++ 
redistributable in their apps. You will see updates listed in installed 
programs along with their base versions, if you installed updates to 
Visual C++ redistributables from Microsoft or from apps developers.

You can probably find the app installing a redistributable by looking 
for the app with the same install date, but there is no telling how many 
other apps depend on the same redistributable got installed later. The 
amount of time you spend on finding the dependency would most likely not 
worth the few megabytes you may save"