大约有 43,000 项符合查询结果（耗时：0.0370秒） [XML]
Tab space instead of multiple non-breaking spaces (“nbsp”)?
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Was looking for this when building a large concat() query in MySQL for use in a Crystal Report. the ASCII (	) did the job perfectly!
– MikeMighty
Mar 9 '18 at 14:40
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How do you specify that a class property is an integer?
...ponential, toFixed, toPrecision, toString
myString. // charAt, charCodeAt, concat, indexOf, lastIndexOf, length and many more...
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Initialization of an ArrayList in one line
...e:
Stream<String> strings = Stream.of("foo", "bar", "baz");
You can concatenate Streams:
Stream<String> strings = Stream.concat(Stream.of("foo", "bar"),
Stream.of("baz", "qux"));
Or you can go from a Stream to a List:
import static java.util.strea...
Listing all permutations of a string/integer
...ment.
The permutation of a set of elements is a list each of the elements, concatenated with every permutation of the other elements.
Example:
If the set just has one element -->
return it.
perm(a) -> a
If the set has two characters: for
each element in it: return the
element, with the permut...
How to declare variable and use it in the same Oracle SQL script?
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Is it possible to concatenate variables+strings?
– Ecropolis
Jun 18 '14 at 15:01
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Rails ActionMailer - format sender and recipient name/email address
...e the name and email, you can end up with an invalid From header by simply concatenating strings. Here is a safe way:
require 'mail'
address = Mail::Address.new email # ex: "john@example.com"
address.display_name = name.dup # ex: "John Doe"
# Set the From or Reply-To header to the following:
addr...
What reason is there to use null instead of undefined in JavaScript?
...eed to make different falsy checks. It would not be the last time that you concat a null object to a string and get a "null" as a string. Or passing a 0 as numeric value and wondering why the IF statement handles is t as a false.
– com2ghz
Feb 11 '16 at 9:29
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How do I get a TextBox to only accept numeric input in WPF?
...o return !ExceedsMaxLength(newText, paste) && Regex.IsMatch(String.Concat(this.AssociatedObject.Text, newText), RegularExpression); then this will evaluate the entire string. Btw - Love this option with the behaviors!!
– Rogala
Jan 28 '15 at 23:44
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Fastest Way to Find Distance Between Two Lat/Long Points
...find the values:
SELECT *
FROM table
WHERE MBRContains(LineFromText(CONCAT(
'('
, @lon + 10 / ( 111.1 / cos(RADIANS(@lon)))
, ' '
, @lat + 10 / 111.1
, ','
, @lon - 10 / ( 111.1 / cos(RADIANS(@lat)))
, ' '
, @lat - 10 / 111.1
...
Hash and salt passwords in C#
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What blowdart said, but with a little less code. Use Linq or CopyTo to concatenate arrays.
public static byte[] Hash(string value, byte[] salt)
{
return Hash(Encoding.UTF8.GetBytes(value), salt);
}
public static byte[] Hash(byte[] value, byte[] salt)
{
byte[] saltedValue = value.Concat...