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Full Discussion: $$ means?
Top Forums Shell Programming and Scripting $$ means? Post 302267454 by patiobarbecue on Friday 12th of December 2008 11:04:46 AM
Old 12-12-2008
more info on my question

hey, thanks for the reply. with the make -d option I am able to pull about more info for diagonosis. This is the paragraph in the makefile I am working on:

$(EXE): $(OBJS)
bla=;\
for file in $(OBJS); do bla="$$bla `$(CYGPATH_W) $$file`"; done; \
$(CXX) $(CXXLINKFLAGS) $(CXXFLAGS) -o $@ $$bla

and after compileing it with make -d, I got this output on terminal:

bla=;\
for file in decomp.o; do bla="$bla `echo $file`"; done; \
g++ -Wl,--rpath -Wl,/Eclipse_workspace/Smi -g -O0 -o decomp $bla

it is a surprise to me that $$bla is just being replaced by $bla. Any explanations? thanks.
 

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Config::Model::DumpAsData(3pm)				User Contributed Perl Documentation			    Config::Model::DumpAsData(3pm)

NAME
Config::Model::DumpAsData - Dump configuration content as a perl data structure VERSION
version 2.021 SYNOPSIS
use Config::Model ; use Log::Log4perl qw(:easy) ; use Data::Dumper ; Log::Log4perl->easy_init($WARN); # define configuration tree object my $model = Config::Model->new ; $model ->create_config_class ( name => "MyClass", element => [ [qw/foo bar/] => { type => 'leaf', value_type => 'string' }, baz => { type => 'hash', index_type => 'string' , cargo => { type => 'leaf', value_type => 'string', }, }, ], ) ; my $inst = $model->instance(root_class_name => 'MyClass' ); my $root = $inst->config_root ; # put some data in config tree the hard way $root->fetch_element('foo')->store('yada') ; $root->fetch_element('bar')->store('bla bla') ; $root->fetch_element('baz')->fetch_with_id('en')->store('hello') ; # put more data the easy way my $step = 'baz:fr=bonjour baz:hr="dobar dan"'; $root->load( step => $step ) ; print Dumper($root->dump_as_data); # $VAR1 = { # 'bar' => 'bla bla', # 'baz' => { # 'en' => 'hello', # 'fr' => 'bonjour', # 'hr' => 'dobar dan' # }, # 'foo' => 'yada' # }; DESCRIPTION
This module is used directly by Config::Model::Node to dump the content of a configuration tree in perl data structure. The perl data structure is a hash of hash. Only CheckList content will be stored in an array ref. Note that undefined values are skipped for list element. I.e. if a list element contains "('a',undef,'b')", the data structure will contain 'a','b'. CONSTRUCTOR
new ( ) No parameter. The constructor should be used only by Config::Model::Node. Methods dump_as_data(...) Return a perl data structure Parameters are: node Reference to a Config::Model::Node object. Mandatory full_dump Also dump default values in the data structure. Useful if the dumped configuration data will be used by the application. (default is yes) skip_auto_write Skip node that have a "perl write" capability in their model. See Config::Model::AutoRead. auto_vivify Scan and create data for nodes elements even if no actual data was stored in them. This may be useful to trap missing mandatory values. ordered_hash_as_list By default, ordered hash (i.e. the order of the keys are important) are dumped as Perl list. This is the faster way to dump such hashed while keeping the key order. But it's the less readable way. When this parameter is 1 (default), the ordered hash is dumped as a list: [ A => 'foo', B => 'bar', C => 'baz' ] When this parameter is set as 0, the ordered hash is dumped with a special key that specifies the order of keys. E.g.: { __order => [ 'A', 'B', 'C' ] , B => 'bar', A => 'foo', C => 'baz' } Methods dump_annotations_as_pod(...) Return a string formatted in pod (See perlpod) with the annotations. Parameters are: node Reference to a Config::Model::Node object. Mandatory experience master, advanced or beginner check_list Yes, no or skip AUTHOR
Dominique Dumont, (ddumont at cpan dot org) SEE ALSO
Config::Model,Config::Model::Node,Config::Model::ObjTreeScanner perl v5.14.2 2012-11-09 Config::Model::DumpAsData(3pm)
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