qr code decoder javascript Offset Values and Constants for seek in Objective-C

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Offset Values and Constants for seek
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Effects Returns in Scalar Context undef on failure A position of 0 is returned as the string 0 but true Integer, new position (in bytes) on success See also (s) 7 Function(s) tell, seek
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$!, XA Returns in List Context
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Module(s) IO::File, IO::Handle
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system
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system PROGRAM, LIST system PROGRAM
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Executes the command specified by PROGRAM, passing LIST as arguments to the command The script waits for execution of the child command to complete before continuing If PROGRAM is the only argument specified, then Perl checks for any shell metacharacters and, if found, passes PROGRAM unchanged to the user s default command shell If there are no metacharacters, then the value is split into words and passed as an entire command with arguments to the system execvp function
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APPENDIXES
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Perl: The Complete Reference
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The return value is the exit status of the program as returned by the wait function To obtain the actual exit value, divide by 256 If you want to capture the output from a command, use the backticks operator Effects Returns in Scalar Context Exit status of program as returned by wait See also (s) 14 Function(s) exec Module(s) $!, $ , XT Returns in List Context
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syswrite
syswrite FILEHANDLE, SCALAR, LENGTH, OFFSET syswrite FILEHANDLE, SCALAR, LENGTH
Attempts to write LENGTH bytes from SCALAR to the file associated with FILEHANDLE If OFFSET is specified, then information is read from OFFSET bytes in the supplied SCALAR This function uses the C/operating system write( ) function, which bypasses the normal buffering You should therefore avoid using functions such as print and read in conjunction with this function
Returns in Scalar Context
Function(s)
Effects
undef on error Integer, number of bytes written See also (s) 7
sysread, sysseek
tell
tell FILEHANDLE tell
Returns the current position (in bytes) within the specified FILEHANDLE If FILEHANDLE is omitted, then it returns the position within the last file accessed
AM FL Y
$!, $@, XA
Returns in List Context
Module(s) IO::File, IO::Handle
Appendix A:
Function Reference
Effects Returns in Scalar Context Integer, current file position (in bytes) See also (s) 7 Function(s) seek, sysseek
XA Returns in List Context Module(s) IO::File, IO::Handle
telldir
telldir DIRHANDLE
Returns the current position within the directory listing referred to by DIRHANDLE Effects Returns in Scalar Context Integer See also (s) 7 Function(s) opendir, readdir, closedir Module(s) IO::Dir XA, U Returns in List Context
tie VARIABLE, CLASSNAME, LIST
Ties the VARIABLE to the package class CLASSNAME that provides implementation for the variable type Any additional arguments in LIST are passed to the constructor for the entire class Typically used to bind hash variables to DBM databases Effects Returns in Scalar Context Reference to tied object See also (s) 10 Function(s) tied, untie Module(s) Tie::Array, Tie::Handle, Tie::Hash, Tie::RefHash, Tie::Scalar, Tie::SubstrHash $@ Returns in List Context
APPENDIXES
Perl: The Complete Reference
tied
tied VARIABLE
Returns a reference to the object underlying the tied entity VARIABLE Effects Returns in Scalar Context undef if VARIABLE is not tied to a package See also (s) 10 Function(s) tie, untie Module(s) Tie::Array, Tie::Handle, Tie::Hash, Tie::RefHash, Tie::Scalar, Tie::SubstrHash None Returns in List Context
time
time
Returns the number of seconds since the epoch (00:00:00 UTC, January 1, 1970, for most systems; 00:00:00, January 1, 1904, for Mac OS) Suitable for feeding to gmtime and localtime Effects Returns in Scalar Context Integer, seconds since epoch See also (s) 11 Function(s) gmtime, localtime Module(s) None Returns in List Context
times
times
Returns a four-element list giving the user, system, child, and child system times for the current process and its children
Appendix A:
Function Reference
Effects Returns in Scalar Context User, system, child, child system times as integer See also (s) 11 Function(s)
None Returns in List Context
Module(s)
tr///
tr/SEARCHLIST/REPLACEMENTLIST/
Not a function This is the transliteration operator; it replaces all occurrences of the characters in SEARCHLIST with the characters in REPLACEMENTLIST Effects Returns in Scalar Context Number of characters replaced or deleted See also (s) 8 Function(s) m//, s/// Module(s) XR Returns in List Context
truncate
truncate FILEHANDLE, LENGTH
Truncates (reduces) the size of the file specified by FILEHANDLE to the specified LENGTH (in bytes) Produces a fatal error if the function is not implemented on your system Effects Returns in Scalar Context undef if the operation failed 1 on success See also (s) 7 Function(s) open, sysopen Module(s) IO::File, IO::Handle $!, XA, XT, U
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