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How to check if a string starts with one of several prefixes?
...there is; matching via regular expressions is much more expensive than raw string method calls. Exact figures I cannot give, but this is the general consensus.
– klaar
Mar 21 '16 at 15:47
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How can I split a string into segments of n characters?
As the title says, I've got a string and I want to split into segments of n characters.
12 Answers
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How to get users to read error messages?
... Instead of requiring users to figure out the date format, take a couple extra minutes and teach your software how to parse dates in multiple formats. The computer is smart -- let it help the user rather than slap their wrists.
– Bryan Oakley
Jul 18 '10 at 4:...
Convert Newtonsoft.Json.Linq.JArray to a list of specific object type
...= ((JArray)array).Select(x => new SelectableEnumItem
{
FirstName = (string)x["first_name"],
Selected = (bool)x["selected"]
}).ToList();
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Can you get the column names from a SqlDataReader?
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var reader = cmd.ExecuteReader();
var columns = new List<string>();
for(int i=0;i<reader.FieldCount;i++)
{
columns.Add(reader.GetName(i));
}
or
var columns = Enumerable.Range(0, reader.FieldCount).Select(reader.GetName).ToList();
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Get form data in ReactJS
...t docs:
https://facebook.github.io/react/docs/more-about-refs.html#the-ref-string-attribute
For a lot of the reasons described in How do I use radio buttons in React? this approach isn't always the best, but it does present a useful alternative in some simple cases.
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Why #define TRUE (1==1) in a C boolean macro instead of simply as 1?
...usage with 1==1, while just using 1 will replace 1, isn't the first method extra comparision overhead... or it is made optimized compiler ?
– pinkpanther
Jun 9 '13 at 13:32
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How to execute an .SQL script file using c#
...e
{
protected void Page_Load(object sender, EventArgs e)
{
string sqlConnectionString = @"Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=ccwebgrity;Data Source=SURAJIT\SQLEXPRESS";
string script = File.ReadAllText(@"E:\Project Docs\MX462-PD\MX756_ModMap...
How to split() a delimited string to a List
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string.Split() returns an array - you can convert it to a list using ToList():
listStrLineElements = line.Split(',').ToList();
Note that you need to import System.Linq to access the .ToList() function.
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How to select an option from drop down using Selenium WebDriver C#?
...cting control by ID and option by text):
protected void clickOptionInList(string listControlId, string optionText)
{
driver.FindElement(By.XPath("//select[@id='"+ listControlId + "']/option[contains(.,'"+ optionText +"')]")).Click();
}
use:
clickOptionInList("ctl00_ContentPlaceHolder_lbxAll...