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Default implementation for Object.GetHashCode()
...already been added into a dictionary, reference equality is perfect. With strings, as you note, one is usually more interested in whether a string containing the same sequence of characters has already been added. That's why string overrides GetHashCode. On the other hand, suppose you want to kee...
Are there any side effects of returning from inside a using() statement?
... be called too.
While you certainly could take the longer route, it's two extra lines that just add cruft and extra context to keep track of (mentally). In fact, you don't really need the extra local variable - although it can be handy in terms of debugging. You could just have:
public static Tran...
How to convert a currency string to a double with jQuery or Javascript?
I have a text box that will have a currency string in it that I then need to convert that string to a double to perform some operations on it.
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How do you convert a JavaScript date to UTC?
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The toISOString() method returns a string in simplified extended ISO
format (ISO 8601), which is always 24 or 27 characters long
(YYYY-MM-DDTHH:mm:ss.sssZ or ±YYYYYY-MM-DDTHH:mm:ss.sssZ,
respectively). The timezone is always ze...
How to COUNT rows within EntityFramework without loading contents?
...le row count.
int count;
using (var db = new MyDatabase()){
string sql = "SELECT COUNT(*) FROM MyTable where FkId = {0}";
object[] myParams = {1};
var cntQuery = db.ExecuteStoreQuery<int>(sql, myParams);
count = cntQuery.First<int>();
}
...
How to convert decimal to hexadecimal in JavaScript
...
Convert a number to a hexadecimal string with:
hexString = yourNumber.toString(16);
And reverse the process with:
yourNumber = parseInt(hexString, 16);
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How do I design a class in Python?
... a defined noun, or some other kind of "primitive" or "atomic" data like a string or a float or something irreducible.
For each action or operation, you have to identify which noun has the responsibility, and which nouns merely participate. It's a question of "mutability". Some objects get update...
Determine if string is in list in JavaScript
In SQL we can see if a string is in a list like so:
14 Answers
14
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Padding characters in printf
... justification, but you can just omit subtracting the length of the second string if you want ragged-right lines.
pad=$(printf '%0.1s' "-"{1..60})
padlength=40
string2='bbbbbbb'
for string1 in a aa aaaa aaaaaaaa
do
printf '%s' "$string1"
printf '%*.*s' 0 $((padlength - ${#string1} - ${#st...
Test if a string contains any of the strings from an array
How do I test a string to see if it contains any of the strings from an array?
14 Answers
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