Http://blog.chinaunix.net/uid-28458801-id-3941112.htmlThe difference between false/true and False/true 1. The difference between false/true and false/true: False/true is a new keyword in the standard C + + language, and False/true is through #
If condition judgment and if True and false judgment
Directory:1. Correct wording2. Wrong wording3. Summary
First, the correct wordingWhen writing shell scripts, to simplify the line numbers and structure of the code, it is common to
JavaScript you don't Know (middle)--ToBooleanThe values in JavaScript can be divided into the following two categories:1. A value that can be coerced into a type that is False2. Other (values that are cast to true for the coercion type)false Values -
For example, the following code:
$str4="php-class,mysql-class,div-css,0,dreamweaver";$s=strtok($str4,',');while($s!==false){ echo $s.""; $s=strtok(',');}
while ($s ===true) {} Why can't it be displayed?True where to use it ~ ~Beginners Please
These concepts were known a long time ago, but they are often forgotten because they are not the same as their cognitive habits. So simply to summarize these concepts, and then forget to look for (other articles too verbose, computational methods
For example, the following code: {code...} while ($ strue) {} cannot be displayed? Where can I use true ~~ For beginners, please take care of O (∩ _ ∩) O ~ Happy New Year ~ My own understanding is :! If 'false' is true, 1. The value is not equal to 2
The empty () function is used to determine whether a string is empty
As long as the variable is 0,null, ", False,empty () is judged to be true.
$num 1= '; $num 2=0; echo $num 1== $num 2; Echo ''; echo $num 1=== $num 2? ' 1 ': ' 0
ASP. NET true/false paging-true paging, asp.net true/false Paging
When the data volume is too large and there are tens of thousands or even tens of thousands of pieces of data, every time you retrieve all the data from the database, the query
Programmers with programming experience know the wording of conditional statements:Take C + + as an example:if (condition) { dosomething ();}The syntax for conditional judgments in Python is as follows:if (condition): dosomething ()So when is
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