Recently, multiple frameworks support developing cross-platform mobile apps. This means developers can reuse the written code on different ...
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Types of apps and frameworks
Native Apps are built with native APIs from specific platform such as IOS, Android, and BlackBerry. Pros High performance. Supports push ...
Shells
Shell is a program taking commands from a keyboard and giving them to operating system. Below are three popular shells on Linux. bash Bourne ...
Virtual Consoles
Virtual Consoles enable multi-user logins on a single machine. For example, you can login with your account and also as a root. By ...
Methodology: Qualitative vs. Quantitative
These two terms can be used as research methods. Qualitative used to gain an understanding of underlying reasons, opinions, and motivations ...
Down Call vs. Up Call
Down Call User code(unprivileged) enters to kernel with trap(interrupt). Up Call Kernel(privileged) enters to user code with IPC(Interprocess ...
White Box, Black Box, and Gray Box
In software testing, there are three different types of testing depending on how much knowledge the testers have on the software being tested. ...
Testing Methods
These are currently popular methods to test software. Fuzz Testing Input massive invalid, unexpected, or random data(Fuzz) to find errors or ...
What does the symbol ‘&’ mean in C and C++?
‘&’ symbol has two meanings in C and C++. Address of Operator: returns address of a variable. int a = 3; printf(“%d”, ...
compileSdkVersion, minSdkVersion, and targetSdkVersion
compileSdkVersion can choose which version of Android SDK to compile the app with strongly recommended to compile with latest SDK (the app ...