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What is the difference between IEqualityComparer and IEquatable?
...
A better example would be comparisons between strings. It makes sense to have a string comparison method which regards strings as equal only if they contain the same sequence of bytes, but there are other useful comparison methods which also constitute equivalence relat...
Error: free(): invalid next size (fast):
...ng to allocate space for an array of pointers, such as
char** my_array_of_strings; // or some array of pointers such as int** or even void**
then you will need to consider word size (8 bytes in a 64-bit system, 4 bytes in a 32-bit system) when allocating space for n pointers. The size of a poin...
What effect(s) can the virtual keyword have in Entity Framework 4.1 POCO Code First?
...hip (of type ICollection<>). A scalar property is a base type (int, string, ..) or a ComplexType (which is just a struct of base types).
– Scott Stafford
Jul 18 '12 at 14:30
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Does static constexpr variable inside a function make sense?
... const in combination with static.
#include <iostream>
#include <string>
#include <cassert>
#include <sstream>
const short const_short = 0;
constexpr short constexpr_short = 0;
// print only last 3 address value numbers
const short addr_offset = 3;
// This function will p...
How to convert a file into a dictionary?
... Is int really necessary here? Perhaps he wanted the numbers to be strings?
– GL2014
Oct 8 '14 at 17:01
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show 4 more comments
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Java: Difference between PrintStream and PrintWriter
...cters.
If an OutputStream deals with bytes, what about PrintStream.print(String)? It converts chars to bytes using the default platform encoding. Using the default encoding is generally a bad thing since it can lead to bugs when moving from one platform to another, especially if you are generating...
Cannot import XSSF in Apache POI
...ported all the JARS from lib folder which is a subdirectory of POI folder
String fileName = "C:/File raw.xlsx";
File file = new File(fileName);
FileInputStream fileInputStream;
Workbook workbook = null;
Sheet sheet;
Iterator<Row> rowIterator;
try {
fileInputStream = new FileInputStrea...
Replace console output in Python
...
An easy solution is just writing "\r" before the string and not adding a newline; if the string never gets shorter this is sufficient...
sys.stdout.write("\rDoing thing %i" % i)
sys.stdout.flush()
Slightly more sophisticated is a progress bar... this is something I am us...
How to pass optional arguments to a method in C++?
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Can you pls provide some example related to string ?
– Swapnil Gupta
Sep 24 '10 at 4:20
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Open existing file, append a single line
... (I like this)
File.AppendAllLines(
"FileAppendAllLines.txt",
new string[] { "line1", "line2", "line3" });
//Method 2
File.AppendAllText(
"FileAppendAllText.txt",
"line1" + Environment.NewLine +
"line2" + Environment.NewLine +
"line3" + Environment.NewLine);
//Method 3
usi...