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T x(value) is usually the better choice because it will directly initialize x with value, whereas T x = value might create a temporary depending on the type of value. In the special case where value is of type T though, my guess is that the expression...
Started by rpg on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
In the special case where....
You're almost right, the better.
T x(value) is usually the better choice because it will directly initialize x with value, whereas T x = value might create a temporary depending on the type of value.
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Is there difference in speed between Dictionary.ContainsKey/Value and a foreach loop that checks for a certain key/value ?
Started by Omu on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
This method performs....
ContainsValue is like a foreach loop.
ContainsKey is faster :
This method approaches an O(1) operation.
As for ContainsValue, I can't tell for sure, but I think there won't be much difference to a loop .
ContainsKey is nearly O(1).
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I have this html, and I want to replace the numeric value within value="##" with the value between <option>value</option>
For example: <option value="16">Accounting</option> , I want to know the regex it'd take to automatically...
Started by Brad on
, 8 posts
by 8 people.
Answer Snippets (Read the full thread at stackoverflow):
Under Linux:
sed 's|<option value="[^"]*">\([^<>]*\)</option>|<option value="\1">\1</option>|g'
I assume this means you want:
<option value="14">Foobar</option>
To become:
<option value....
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Ask your Facebook Friends
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In generating a select tag for a Boolean value, I use the following code:
<select name="name" id="id"> <option value="0"<?php if(empty($value)): ?> selected="selected"<?php endif; ?>>Off</option> <option value="1"<?...
Started by Jrgns on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Saying that:
$value is the reciprocal of empty($value) is, in my view, equivalent to asserting that
(....
EInteresting.
The only reason I see to use empty() here is to avoid warnings in case $value is not set the variable is not set.
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Just to make this clear - what is the difference between:
String(value)
and
value as String
What are the cases where you would use one over the other? They seem interchangeable...
Started by onekidney on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
It....
value as String will simply pass back value IF value is a String or a subclass of String.
String (value) creates a new String object from a string object's .toString() method.
Vs-the-as-operator/ for more explanations.
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How can i convert double value to binary value.
i have some value like this below 125252525235558554452221545332224587265 i want to convert this to binary format..so i am keeping it in double and then trying to convert to binary (1 & 0's).. i am using...
Started by raj on
, 6 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
In Java there's Double.doubleToLongBits which does the same thing....
Or what sort of binary value you're interested in, but in .NET there's BitConverter.DoubleToInt64Bits which lets you get at the IEEE 754 bits making up the value very easily.
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I want to store values as key,value,value pair. My data is of type
Key -> int & both values -> ulong,
How to initialize & fetch values of such dictionary. I am using VS-2005.
If i use a class or struct then how do i fetch the values.
Started by Royson on
, 10 posts
by 10 people.
Answer Snippets (Read the full thread at stackoverflow):
Maybe you have to define a class say class Pair to hold your two value, and use int as the key, KeyValuePair<ulong, ulong>>();
If you want to add in a value: Key=1, Pair = {2,3}
dictionary.Add(1, new than one value in the....
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Hi, just wondering if there is any way of checking if Value A is equal to ANY value within an array (without using large loop functions) - sort of like a "Where" function.
e.g.
if (DataRow[column1value] == <any value within>Array A[]) { //do... ...
Started by David Archer on
, 7 posts
by 7 people.
Answer Snippets (Read the full thread at stackoverflow):
(Did not see a way.
Whether there's a value in it
I believe the contains method is for lists.
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What is the difference between value = NULL; and value = ""; in PHP ?
Am facing wierd response as if I set value = ""; than I get empty array response from database which is what am supposed to get but if I set value = NULL; than I get empty string response...
Started by Rachel on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Use the IS NULL....
Conceptually, NULL means “a missing unknown value” and it is treated somewhat differently from other;, or <>.
Have a look at
Working with NULL Values
The NULL value can be surprising until you get used to it.
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I have defined a C# enum as
public enum ORDER { ... unknown, partial01, partial12, partial23, }
and can use its value as a string as in:
string ss = ORDER.partial01.ToString();
However when I try to use it in a case statement it fails to compile:
string...
Started by peter.murray.rust on
, 9 posts
by 9 people.
Answer Snippets (Read the full thread at stackoverflow):
Alternatively, if....
(ORDER)Enum.Parse(typeof(ORDER), value are desiring.
You probably need to convert your switch case into a series of if/else statements
Convert the string in your switch to an enum value.
It is a dynamic value.
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