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yujikosuga / perl_regex_time.txt
Created January 25, 2016 00:58
Computation Time of ^(a+)+$ by Programming Language
# Perl Computation Time of ^(a+)+$
$ time perl -e 'print (("a"x100 . "b") =~ /^(a+)+$/)'
real 0m0.010s
user 0m0.003s
sys 0m0.004s
$ time perl -e 'print (("a"x1000 . "b") =~ /^(a+)+$/)'
real 0m0.011s
user 0m0.004s
@yujikosuga
yujikosuga / otool.txt
Created December 22, 2011 01:58
otool: objdump provided for Mac
otool: at least one file must be specified
Usage: otool [-fahlLDtdorSTMRIHvVcXm] <object file> ...
-f print the fat headers
-a print the archive header
-h print the mach header
-l print the load commands
-L print shared libraries used
-D print shared library id name
-t print the text section (disassemble with -v)
-p <routine name> start dissassemble from routine name
@yujikosuga
yujikosuga / ButtonPref.java
Created September 22, 2011 08:05
Add a button to a PreferenceScreen (Android)
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.pref_button);
...
Preference pref = findPreference("sample_key");
pref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
@Override
public boolean onPreferenceClick(Preference preference) {
// TODO Auto-generated method stub
@yujikosuga
yujikosuga / JarExtractor.java
Created December 21, 2011 13:46
Extract children jar files inside of a jar file (which is often a self-contained executable jar file)
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.;
import java.i FileOutputStream o.IOException;
import java.util.Enumeration;
import java.util.jar.JarFile;
import java.util.zip.ZipEntry;
/**
#include <stdio.h>
#include <fstream>
#include <thread>
#include "public/common/AMFFactory.h"
#include "public/common/AMFSTL.h"
#include "public/common/Thread.h"
#include "public/common/TraceAdapter.h"
#include "public/include/components/VideoEncoderVCE.h"