pcre

• PCRE

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Building material - Gypcrete

1 With an abundance of gypsum (naturally occurring and by-product

chemical FGD and phospho gypsums) available worldwide,

gypcrete-based building products, which are fully recyclable, offer

significant environmental benefits.


PCRE

1 The name is misleading, because PCRE and Perl each have capabilities not shared by the

other.


PCRE

1 The PCRE library is incorporated into a number of prominent open source

programs, such as the Apache HTTP Server and the PHP and R (programming language)|R scripting languages; and can be incorporated in proprietary software

too (BSD license). As of Perl 5.10, PCRE is also available as a replacement for Perl's

default regular expression engine through the re::engine::PCRE module.


PCRE

1 The PCRE library provides matching only; the C++ wrapper, if used, adds

multiple match and replacement functionality.


PCRE

1 Unless the NoRecurse PCRE build option (aka --disable-stack-for-recursion) is chosen, adequate stack space must be allocated to PCRE by the calling application or operating system. The

amount of stack needed varies for each pattern. For example, to complete the tests provided with pcretest, 8MB of stack space would be

needed. While PCRE's documentation cautions that the NoRecurse build option makes PCRE slower than the alternative, using it avoids

entirely the issue of stack overflows.


PCRE - Features

1 In some cases PCRE has included in mainline releases features that originated with Perl 5.9.x and in

some cases Perl 5.9.x has included features that were previously only

available in PCRE.


PCRE - Features

1 PCRE includes the following features:


PCRE - Features

1 ;Just-in-time compiler support: This optional feature is available in version 8.20 and

above if enabled when the PCRE library is built. Large performance benefits are

possible when (for example) the calling program utilizes the feature with

compatible patterns that are executed repeatedly. The just-in-time compiler

support was written by Zoltan Herczeg and is not addressed in the POSIX or C++

wrappers.https://store.theartofservice.com/itil-2011-foundation-complete-certification-kit-fourth-edition-study-guide-ebook-and-online-course.html

PCRE - Features

1 A good example of this is \R, which had no special meaning

prior to PCRE 7


PCRE - Features

1 Note that the UCP option requires the PCRE library to have been built to

include UTF-8 and Unicode property support


PCRE - Features

1 It also affects PCRE's matching procedure (since version 7.0): when

an unanchored pattern fails to match at the start of a newline sequence,

PCRE advances past the entire newline sequence before retrying the

match


PCRE - Features

1 :The newline option can be altered with external options when a pattern is compiled as well as when it is run. Few application using PCRE provide users with the means to apply this setting via an external option. So,

new in version 7.3, the newline option can also be stated at the start

of the pattern using one of the following:


PCRE - Features

1 *(*ANYCRLF) Any of the above encountered in the data will trigger newline processing. Corresponding linebreaks can be matched with (?

namenamenamesubpat-numbersubpat-name=\W)(?=\w)|(?!

(?:[^]+|(?3)|(?1))* )()(! ! ! )$/ will match in Perl but not in PCRE.


PCRE - Features

1 ;The value of a capture buffer deriving from the ? quantifier (match 1 or 0 times) when nested in another quantified capture buffer is different: aba =~ /^(a(b)?)+$/; will result in $1

containing 'a' and $2 containing undef in Perl, but in PCRE will result

in $2 containing 'b'.


PCRE - Features

1 ;PCRE allows named capture buffers to be given numeric names; Perl

requires the name to follow the rule of barewords: This means that \g is unambiguous in Perl, but potentially

ambiguous in PCRE.


PCRE - Features

1 Note however that since version 8.10, PCRE supports the following verbs with a specified argument:

(*MARK:markName), (*SKIP:markName),

(*PRUNE:markName), and (*THEN:markName).


PCRE - Features

1 ;PCRE and Perl are slightly different in their tolerance of erroneous constructs:

Perl allows quantifiers on the (?!) construct, which is meaningless but harmless (albeit inefficient); PCRE produces an error. (Note that such

assertions can be harmlessly quantified with PCRE beginning with version 8.13,

so the cited example applies only to earlier versions.)


PCRE - Features

1 ;PCRE has a hard limit on recursion depth, Perl does not: With default build

options bbbbXcXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =~ /.X(.+)+X/ will fail to match

due to stack overflow, but Perl will match this correctly. Perl uses the heap for recursion and has no hard limit for recursion depth, whereas PCRE has a

compile time hard limit.https://store.theartofservice.com/itil-2011-foundation-complete-certification-kit-fourth-edition-study-guide-ebook-and-online-course.html

PCRE - Features

1 With the exception of the above points PCRE is capable of passing the

tests in the Perl 't/op/re_tests' file, one of the main syntax level

regression tests for Perl's regular expression engine.


Hempcrete

1 'Hempcrete' is a mixture of hemp hurds (shives) and Lime (material)|lime (possibly including hydraulic lime|natural hydraulic lime,Allin, Steve. Building with Hemp, Seed

Press, 2005, ISBN 978-0-9551109-0-0. (p. 146, 1st Edition). sand, pozzolans or Portland cement|cement) used as a material for

construction and Building insulation|insulation.


Hempcrete

1 It is marketed under names like Hempcrete, Canobiote, Canosmose, and Isochanvre. Hempcrete is easier

to work with than traditional lime mixes and acts as an insulator and

moisture regulator. It lacks the brittleness of concrete and

consequently does not need expansion joints.


Hempcrete

1 However, the typical compressive strength is around 1MPa, around 1/20

that of residential grade concrete. Hempcrete walls must be used

together with a frame of another material that supports the vertical load in building construction, as


Hempcrete

1 Ahlberg, Johan and Georges, Elza and Norlén, Mikael (2014)

[http://www.diva-portal.org/smash/record.jsf?pid=diva2:722306 The potential of hemp buildings in

different climates: A comparison between a common passive house

and the hempcrete building system]


Hempcrete

1 Like other plant products, the hemp crop absorbs carbon dioxide gas as it

grows, retaining the carbon and releasing the oxygen. 165kg of

carbon can be theoretically absorbed and locked up by 1m3 of hempcrete

wall over many decades.


The Ipcress File (film)

1 'The Ipcress File' is a 1965 British espionage film directed by Sidney J. Furie, starring

Michael Caine and featuring Guy Doleman and Nigel Green. The screenplay by Bill Canaway

and James Doran was based on Len Deighton's 1962 in literature|1962 novel, The IPCRESS File. It has won critical acclaim and a BAFTA award for best British film. In 1999 it was included at number 59 on the British Film Institute|BFI list of the BFI Top 100 British

films|100 best British films of the 20th century.


The Ipcress File (film) - Plot

1 Later, Carswell and Palmer learn that Housemartin has been arrested, but by the time they reach the police station, they find that men impersonating them have killed

him. Suspecting that Radcliffe may be being held in a disused factory near where

Housemartin was picked up, Palmer orders a search, but they find only a piece of

audiotape marked 'IPCRESS' that produces a meaningless noise when played.



1 Some days later, it becomes clear that while Radcliffe is physically unharmed, his mind has been affected and he can no longer

function as a scientist. Carswell discovers a book titled 'I'nduction of 'P'sychoneuroses by

'C'onditioned 'R'eflex under Str'ess': 'IPCRESS', which he believes explains what

has happened to Radcliffe and the other scientists. Carswell borrows Palmer's car to

test his theory on Radcliffe, but is killed before reaching him.



1 Believing that he himself must have been the intended target, Palmer goes home to collect his belongings and there discovers

the body of the second CIA agent. When he returns to the office, the IPCRESS file is missing from his desk. Certain that he is being set up, Palmer tells Dalby what has happened and that he suspects Ross took the file, revealing that Ross had previously asked him to microfilm it. Dalby tells him to

leave town for a while.https://store.theartofservice.com/itil-2011-foundation-complete-certification-kit-fourth-edition-study-guide-ebook-and-online-course.html

The Ipcress File (film) - Production and contrast with Bond franchise

1 Ipcress had two immediate sequels: Funeral in Berlin (film)|Funeral in

Berlin (1966) and Billion Dollar Brain (1967). Decades later Michael Caine

returned to his Harry Palmer character in Harry Alan Towers's

Bullet to Beijing (1995) and Midnight in Saint Petersburg (1996).


Harry Palmer - The IPCRESS File

1 Unlike the James Bond (film series)|Bond films, The IPCRESS File was

designed to have a different, more down-beat style, although Saltzman employed many Bond movie staff, including production designer Ken Adam, film editing|editor Peter R


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