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Array or List in Java. Which is faster?
I have to keep thousands of strings in memory to be accessed serially in Java. Should I store them in an array or should I use some kind of List ?
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How to grep for two words existing on the same line? [duplicate]
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Use grep:
grep -wE "string1|String2|...." file_name
Or you can use:
echo string | grep -wE "string1|String2|...."
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What does a tilde do when it precedes an expression?
... also less relevant now that JavaScript has Array.prototype.includes() and String.prototype.includes(). These return a boolean value. If your target platform(s) support it, you should prefer this for testing for the existence of a value in a string or array.
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Create nice column output in python
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Since Python 2.6+, you can use a format string in the following way to set the columns to a minimum of 20 characters and align text to right.
table_data = [
['a', 'b', 'c'],
['aaaaaaaaaa', 'b', 'c'],
['a', 'bbbbbbbbbb', 'c']
]
for row in table_data:
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How can I truncate a datetime in SQL Server?
...11), getdate(), 113) as datetime)
The wrong way works by converting to a string, truncating the string, and converting back to a datetime. It's wrong, for two reasons: 1)it might not work across all locales and 2) it's about the slowest possible way to do this... and not just a little; it's like ...
How can I get the client's IP address in ASP.NET MVC?
...Controller
{
public ActionResult Index()
{
string ip = Request.UserHostAddress;
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}
}
}
Example: From within a helper class:
using System.Web;
namespace Mvc.Helpers
{
public static class HelperClass
{
public static string...
How do I install pip on macOS or OS X?
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An extra warning: don't run this when a homebrew based python installed and occurs earlier in PATH (e.g. when you change /etc/paths): it would install pip with root credentials for the wrong python
– acidju...
Multiline string literal in C#
Is there an easy way to create a multiline string literal in C#?
13 Answers
13
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StringBuilder vs String concatenation in toString() in Java
Given the 2 toString() implementations below, which one is preferred:
18 Answers
18
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How to render a PDF file in Android
...ast and easy to use, licensed under Apache License 2.0:
pdfView.fromAsset(String)
.pages(0, 2, 1, 3, 3, 3) // all pages are displayed by default
.enableSwipe(true)
.swipeHorizontal(false)
.enableDoubletap(true)
.defaultPage(0)
.onDraw(onDrawListener)
.onLoad(onLoadCompleteListener)
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