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Adding two numbers concatenates them instead of calculating the sum
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They are actually strings, not numbers. The easiest way to produce a number from a string is to prepend it with +:
var x = +y + +z;
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In C# check that filename is *possibly* valid (not that it exists) [duplicate]
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Be careful with FileInfo. Any string, even if it's just a single letter is a valid argument in the constructor, but simply trying new FileInfo(pathTheuserEntered) will cause FileInfo to assume the file is relative to the current working directory, which m...
Find an item in List by LINQ?
Here I have a simple example to find an item in a list of strings. Normally I use for loop or anonymous delegate to do it like this:
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How to pass an array within a query string?
Is there a standard way of passing an array through a query string?
10 Answers
10
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javascript regex - look behind alternative?
...per explanation for this regex can be found at Regular expression to match string not containing a word?
Look ahead is available since version 1.5 of javascript and is supported by all major browsers
Updated to match filename2.js and 2filename.js but not filename.js
(^(?!filename\.js$).).+\.js
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AJAX in Chrome sending OPTIONS instead of GET/POST/PUT/DELETE?
...omedata). As you can see, this is not valid JSON. And, somedata can be a string, or a number, or whatever you want it to be.
– Ray Nicholus
Feb 14 '14 at 15:45
1
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Best way to parse command-line parameters? [closed]
...ln [--min-size num] [--max-size num] filename
"""
def main(args: Array[String]) {
if (args.length == 0) println(usage)
val arglist = args.toList
type OptionMap = Map[Symbol, Any]
def nextOption(map : OptionMap, list: List[String]) : OptionMap = {
def isSwitch(s : String) =...
Bash if [ false ] ; returns true
...ument "false", not running the command false. Since "false" is a non-empty string, the test command always succeeds. To actually run the command, drop the [ command.
if false; then
echo "True"
else
echo "False"
fi
sh...
Writing data into CSV file in C#
...a loop, consider doing it like this:
//before your loop
var csv = new StringBuilder();
//in your loop
var first = reader[0].ToString();
var second = image.ToString();
//Suggestion made by KyleMit
var newLine = string.Format("{0},{1}", first, second);
csv.AppendLine(newLine)...
What is the difference between a field and a property?
...ield. It is private to your class and stores the actual data.
private string _myField;
// this is a property. When accessed it uses the underlying field,
// but only exposes the contract, which will not be affected by the underlying field
public string MyProperty
{
get
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