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What regular expression will match valid international phone numbers?
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This is not valid. European phone numbers can start with a double 0 without a + in the beginning. Thus a phone number such as: +44 8984 1234 (UK) is also perfectly valid if written 0044 8984 1234 which this regexp (and on other answers as well) does not support.
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What is a NullPointerException, and how do I fix it?
...eption. eg when checking an input string with a constant string you should start with the constant string like here: if ("SomeString".equals(inputString)) {} //even if inputString is null no exception is thrown. So there are a bunch of things that you can do to try to be safe.
–...
How to add a progress bar to a shell script?
...%)\r'
echo -ne '\n'
In a comment below, puk mentions this "fails" if you start with a long line and then want to write a short line: In this case, you'll need to overwrite the length of the long line (e.g., with spaces).
s...
Should I put the Google Analytics JS in the or at the end of ?
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10 to 20 seconds to load everything up. If your Google Code doesn’t
start until the end of the page, it can get held up, just like the old
non-asynchronous code used to hold up OTHER lines of code. Except now
it’s holding up the tracking code. If a visitor to your site hits the
page, ...
Why doesn't String switch statement support a null case?
...on is determined by invoking the method Enum.ordinal(). The [...] ordinals start at zero.
That means, mapping null to 0 wouldn't be a good idea. A switch on the first enum value would be indistinguishible from null. Maybe it would've been a good idea to start counting the ordinals for enums at 1. Ho...
What Vim command(s) can be used to quote/unquote words?
.../\%V'\%V/"/g
va' - Visually select the quoted word and the quotes.
:s/ - Start a replacement.
\%V'\%V - Only match single quotes that are within the visually selected region.
/"/g - Replace them all with double quotes.
s...
Different ways of loading a file as an InputStream
... classpath at the following location: "java/lang/myfile.txt". If your path starts with a /, then it will be considered an absolute path, and will start searching from the root of the classpath. So calling String.class.getResourceAsStream("/myfile.txt") will look at the following location in your cla...
Is there a splice method for strings?
... (see fiddle tests for benchmarks).
String.prototype.splice = function(startIndex,length,insertString){
return this.substring(0,startIndex) + insertString + this.substring(startIndex + length);
};
You can use it like this:
var creditCardNumber = "5500000000000004";
var cardSuffix = credit...
Check if a JavaScript string is a URL
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URL is working starting from Edge so everything below it might not work as you expect. Make sure you check the compatibility first.
– Tony T.
Jul 27 '18 at 6:31
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Create a GUID in Java
... it's just generally inefficient (programming- and/or performance-wise) to start depending on outside sources when there's plenty of ways to do it within Java (unless you need it in those, of course, e.g. as part of creating a record in the SQL server).
– DennisK
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