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Why use 'virtual' for class properties in Entity Framework model definitions?
... http://weblogs.asp.net/scottgu/archive/2010/07/16/code-first-development-with-entity-framework-4.aspx
7 Answers
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What is the difference between int, Int16, Int32 and Int64?
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Each type of integer has a different range of storage capacity
Type Capacity
Int16 -- (-32,768 to +32,767)
Int32 -- (-2,147,483,648 to +2,147,483,647)
Int64 -- (-9,223,372,036,854,775,808 to +9,223,372,036,854,775,807)
As stated by James Sutherland in his answe...
Reading binary file and looping over each byte
... "rb")
try:
byte = f.read(1)
while byte != "":
# Do stuff with byte.
byte = f.read(1)
finally:
f.close()
Python 2.5-2.7
with open("myfile", "rb") as f:
byte = f.read(1)
while byte != "":
# Do stuff with byte.
byte = f.read(1)
Note that the wit...
What is the difference between a string and a byte string?
I am working with a library which returns a byte string and I need to convert this to a string.
7 Answers
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How can I sanitize user input with PHP?
Is there a catchall function somewhere that works well for sanitizing user input for SQL injection and XSS attacks, while still allowing certain types of HTML tags?
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What's the best way to share data between activities?
I have one activity which is the main activity used throughout the app and it has a number of variables. I have two other activities which I would like to be able to use the data from the first activity.
Now I know I can do something like this:
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Structure padding and packing
...daries - say, int members would have offsets, which are mod(4) == 0 on 32-bit platform. Padding is on by default. It inserts the following "gaps" into your first structure:
struct mystruct_A {
char a;
char gap_0[3]; /* inserted by compiler: for alignment of b */
int b;
char c;
c...
How to configure multi-module Maven + Sonar + JaCoCo to give merged coverage report?
... the internet for this one. There's lots of half-answers out there, to do with Maven properties such as ${sonar.jacoco.reportPath} , or org.jacoco:jacoco-maven-plugin:prepare-agent or setting maven-surefire-plugin argLine with -javaagent .
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When and why would you seal a class?
In C# and C++/CLI the keyword sealed (or NotInheritable in VB) is used to protect a class from any inheritance chance (the class will be non-inheritable). I know that one feature of object-oriented programming is inheritance and I feel that the use of sealed goes against this feature, it stop...
How to determine if binary tree is balanced?
It's been a while from those school years. Got a job as IT specialist at a hospital. Trying to move to do some actual programming now. I'm working on binary trees now, and I was wondering what would be the best way to determine if the tree is height-balanced.
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