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In Coq, how to remove a defined variable from the namespace?


In Coq, how to remove a defined variable from the namespace?

By : Craig Wiencek
Date : November 21 2020, 03:00 PM
wish help you to fix your issue You can use Reset my_bool. to remove it from the environment.
Reference: https://coq.inria.fr/refman/proof-engine/vernacular-commands.html#coq:cmd.reset:
code :


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variable already defined error with namespace

variable already defined error with namespace


By : Aayesha
Date : March 29 2020, 07:55 AM
Any of those help You should not define a variable in a header file and include that header in multiple translation units. It breaks the One definition rule and hence the error.
Remember that the header guards prevents multiple inclusion of the header within the same translation unit not within different translation units.
code :
// stage 1;
namespace gamestage1
{
    extern int btn_number;
}
#include "gameplan.h"
namespace gamestage1
{
    int btn_number = 9;
}
#include "gameplan.h"
Restricting access loudly to a global variable defined in a namespace

Restricting access loudly to a global variable defined in a namespace


By : Zhong Guan
Date : March 29 2020, 07:55 AM
I hope this helps you . First off, note that you get a different version of _member in each translation unit! I'm not sure if that is intentional or not.
If you actually want one _member in your program and you don't want the user to access a specific global variable, you shouldn't make it visible in the header! Put it into the source and provide functions to access it there:
code :
// some-module.h
double getValue();
void   setValue(double value);

// some-module.cpp
#include "some-module.h"
static double value(0.01);
double getValue() { return value; }
void   setValue(double value) { ::value = value; }
#if ONE_VALUE_PER_TRANSLATION_UNIT
namespace {
#endif

class Value
{
    static double& value() { static double rc(0.01); return rc; }
    friend double getValue();
    friend void   setValue(double value);
};
double getValue() { return Value::value(); }
void   setValue(double value) { Value::value() = value; }

#if ONE_VALUE_PER_TRANSLATION_UNIT
}
#endif
XSLT to remove element when parent has namespace defined

XSLT to remove element when parent has namespace defined


By : proton
Date : March 29 2020, 07:55 AM
this one helps.
how to remove an element if a parent element has a namespace defined?
code :
<xsl:stylesheet version="1.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:ns0="http://www.docusign.com/restapi">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:strip-space elements="*"/>

<!-- identity transform -->
<xsl:template match="@*|node()">
    <xsl:copy>
        <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
</xsl:template>

<xsl:template match="ns0:uri"/>

</xsl:stylesheet>
When does a variable or function defined in a namespace is allocated memory?

When does a variable or function defined in a namespace is allocated memory?


By : William Guan
Date : March 29 2020, 07:55 AM
it should still fix some issue The ch object is in the global scope. Instances of classes/types in the global scope get constructed, initialized, allocated, whatever, at startup, and their scope exist for the lifetime of the execution.
An object's namespace only relates to the name of the object. The object's construction or destruction is not affected by any namespace the name of the object is in, but by its scope.
Cannot define namespace variable which was defined globally TCL

Cannot define namespace variable which was defined globally TCL


By : Gustavo Molina
Date : March 29 2020, 07:55 AM
around this issue Always define variables in a namespace with the variable command at least the first time you access them, otherwise you end up with namespace variable resolution rules taking over and making your life unpleasant. They're weird (though actually very similar to how command resolution works) and you virtually never want them, and may get removed in Tcl 9. But until then, you're stuck doing:
code :
namespace eval ns {
    variable foo 2
    variable bar 3
}
namespace eval ns {
    variable foo
    set foo 2
    variable bar
    set bar 3
}
namespace eval ns {
    variable ary
    array set ary {foo 2 bar 3}
}
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