Recent questions tagged variables

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variables - How do I use symbolic references in Perl?

In Perl, if a variable holds the name for another variable, how do I use the first variable to visit the ... me it might related to typeglob. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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variables - C- why char c=129 will convert into -127?

if we assign +128 to char variable then it is converted into -128 because of binary equivalent(10000000-first bit ... char c=129; Thanks, S See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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variables - Dynamic Comparison Operators in PHP

Is it possible, in any way, to pass comparison operators as variables to a function? I am looking at producing ... 'worked'; Thanks in advance. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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variables - How does Java store UTF-16 characters in its 16-bit char type?

According to the Java SE 7 Specification, Java uses the Unicode UTF-16 standard to represent characters. When imagining ... 2-byte "char" type? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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variables - C++ int with preceding 0 changes entire value

I have this very strange problem where if I declare an int like so int time = 0110; and then display it ... because of this. Thanks in advance! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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variables - ISO C90 forbids mixed declarations and code in C

I declared a variable in this way: int i = 0; I get the warning: ISO C90 forbids mixed declarations and code How can I fix it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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variables - C multiple single line declarations

What happens when I declare say multiple variables on a single line? e.g. int x, y, z; All are ints. The ... , z; Are they all int pointers? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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variables - Comparing IEEE floats and doubles for equality

What is the best method for comparing IEEE floats and doubles for equality? I have heard of several methods, ... see what the community thought. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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variables - How do you pass objects by reference in PHP 5?

In PHP 5, are you required to use the & modifier to pass by reference? For example, class People() { } $p ... variables, classes, arrays, ...)? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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variables - PHP global or $GLOBALS

Is there a best practice / recommendation when I want to use a variable declared outside of a function when it ... $GLOBALS['myVar'] Thank you. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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