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In Firefox 3.5, I type this in the Firebug console :
false=={} // => evals to false {}==false // syntax error
What is the explanation for this ?
Started by subtenante on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
But now the parser is looking for the next statement:
==false
Huh? That's not a statement; syntax.
That's fine.
That's why the following work OK:
({} == false); alert({} == false); !{} == false in it.
Curly brace ( { ).
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How can I represent, true/false as the Boolean and "true"/"false" the strings in XML?
Eg.
<problem>false</problem> <problem>problem_name</problem>
Or is there a better way to do this?
Started by steven on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
It is a common unwritten rule that says in xml as a boolean value we should use: 'true' and 'false to distinguish between "real" booleans and the texts "true" and "false"?
Well - an attribute might help IsActive="false"></problem....
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When I'm using an If statement and I want to check if a boolean is false should I use the "Not" keyword or just = false, like so
If (Not myboolean) then
vs
If (myboolean = False) then
Which is better practice and more readable?
Started by Nathan W on
, 8 posts
by 8 people.
Answer Snippets (Read the full thread at stackoverflow):
If (node.HasChildren)
! condition
In C and pre-STL C++, "!condition" means condition evaluates to a false truth value, whereas "condition == FALSE" meant that the value of condition had to equal what the system designed as FALSE....
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Ask your Facebook Friends
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How would you convert an array of booleans to a string like "false, true, true, false" - using as few lines of code as possible?
Python allows me to use the following (very nice and clean):
", ".join(map(str, [False, True, True, False]))
In C#, string...
Started by AndiDog on
, 7 posts
by 7 people.
Answer Snippets (Read the full thread at stackoverflow):
Var boolStrings = string.Join(",", new List<bool> { false, true, true, false } .ConvertAll(x, false, false, true }.ConvertAll(x => x.ToString()).ToArray())
var array = new[] { true, false, false;() {....
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We use an external API whcih returns '' or boolean false while Javascript seems to find the both equal. for example:
var x = ''; if (!x) { alert(x); // the alert box is shown - empty } if (x=='') { alert(x); // the alert box is shown here too - empty ...
Started by Saggi Malachi on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
So:
0 == "0" //true 0 === "0" //false, since both the value and the type....
Use the triple equal
if (x===false) //false as expected if (z==='') //false as expected
A double equal will do type casting, while triple equal will not.
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SELECT id FROM Activity WHERE important = see below
IF [Forms]![Search]![important] = false , search for both true and false
IF [Forms]![Search]![important] = true , search for only true
I hope you understand what I want to do. Is this possible?
Started by Johan on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Try this:
SELECT id FROM Activity WHERE important = @important OR @important = false
Or, maybe.
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My compiler (VC++ 6.0 sp6) has apparently gone insane. In certain pieces of code I'm seeing that ' bool mybool = true; ' evalutes to and assigns false, and vice versa for true. Changing the true/false keywords to 1/0 makes it work fine. The same code ...
Started by kingkongrevenge on
, 11 posts
by 11 people.
Answer Snippets (Read the full thread at stackoverflow):
false # error "false is defined as a macro" #endif
Response to comments:
Find a non-header file where that is attempting to 'fix' the true/false values, but got them wrong?
Check for #define true 0 and #define false 1
It....
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Simple question: I have a WinForms button, and I want to make it both (conditionally) invisible and disabled (to be sure that if someone clicks in the space where the invisible button lives, it won't activate it.) Does button.Visible = false also imply...
Started by Dave Hanna on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
However, setting the property to false does make the control effectively not even hence there is no way to perform....
Setting Visible to false does not change the Enabled property.
As the programmer, provide another method programmatically ).
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Simple question really; is there a difference between these values (and is there a difference between BOOL and bool)? A co-worker mentioned that they evaluate to different things in objective-c, but when i looked at the typedefs in their respective .h...
Started by Kevlar on
, 5 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
C processes.
No, YES/NO is a different way to refer to TRUE/FALSE(1/0)
Marco
No there is not.
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I am new to programming, and am wondering if there is a correct way to order your control structure logic.
It seems more natural to check for the most likely case first, but I have the feeling that some control structures won't work unless they check ...
Started by htxt on
, 10 posts
by 10 people.
Answer Snippets (Read the full thread at stackoverflow):
There are some languages that will stop evaluating an expression once one part of it is false.
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