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How do I use boolean variables in Perl?
...think you wanted to imply a list with an element that consists of an empty string (even though parens don't create lists), but as I've already mentioned, it's impossible to check if a list is true of false.
– ikegami
Apr 13 '11 at 20:42
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Check if a string contains an element from a list (of strings)
...With LINQ, and using C# (I don't know VB much these days):
bool b = listOfStrings.Any(s=>myString.Contains(s));
or (shorter and more efficient, but arguably less clear):
bool b = listOfStrings.Any(myString.Contains);
If you were testing equality, it would be worth looking at HashSet etc, bu...
How to convert String to long in Java?
I got a simple question in Java: How can I convert a String that was obtained by Long.toString() to long ?
9 Answers
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Equivalent to 'app.config' for a library (DLL)
...code won't work properly.
Now to read from this file have such function:
string GetAppSetting(Configuration config, string key)
{
KeyValueConfigurationElement element = config.AppSettings.Settings[key];
if (element != null)
{
string value = element.Value;
if (!string.Is...
Question mark and colon in JavaScript
...want TRUE / FALSE: If 'expression' was just some variable with a number or string in it, "var x = !!expression" will make it into a boolean result.
– Scott Lahteine
Jan 4 '12 at 23:15
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What is the instanceof operator in JavaScript?
...an example taken directly from Mozilla's developer site:
var color1 = new String("green");
color1 instanceof String; // returns true
var color2 = "coral"; //no type specified
color2 instanceof String; // returns false (color2 is not a String object)
One thing worth mentioning is instanceof evalua...
Remove unwanted parts from strings in a column
I am looking for an efficient way to remove unwanted parts from strings in a DataFrame column.
9 Answers
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How do I base64 encode (decode) in C?
...re is the one from Jouni Malinen that I slightly modified to return a std::string:
/*
* Base64 encoding/decoding (RFC1341)
* Copyright (c) 2005-2011, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
// 2016-12-...
How to extract numbers from a string in Python?
I would extract all the numbers contained in a string. Which is the better suited for the purpose, regular expressions or the isdigit() method?
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How can I convert an image into a Base64 string?
What is the code to transform an image (maximum of 200 KB) into a Base64 String?
14 Answers
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