');
});

module.exports = router;

express-post-server.js:
const express = require('express');
const bar = require('./express-post');
const app = express();

// curl -X GET http://localhost:3000/foo
app.get('/foo', function (req, res, next) {
    res.send('This is foo GET!');
});

// register
app.use('/bar', bar);

app.listen(3000);

For complete running example clone node-cheat and run node express-post.

 Q:

Why use TAG in most of the Android logging code

I can see this is common practice among Android developers.
public final class TasksSample extends ListActivity {
    private static final String TAG = "TasksSample";
    private void method() {
        Log.i(TAG, "message");
    }
}

Will it be easier, if I do it this way? I need not to declare TAG for every new class.
public final class TasksSample extends ListActivity {
    private void method() {
        Log.i(getClass().getName(), "message");
    }
}  

A:

Rather than writing getClass().getName() at each place where a log is placed in a particular activity, it is always preferred to have a TAG that would represent the name of the activity class.
Why use TAG?
When you are running your application there might be more than one Activity class in it. To distinguish which activity class has logged the information in logcat we use a TAG which of course represents the name of the class.
And the proper way (I am not saying what you have written is wrong) of writing the TAG is:
private static final String TAG = TasksSample.class.getSimpleName(); // and not "TasksSample"

A:

Every previous answer is right, but I just wanna add a little comment.
private static final String TAG = TasksSample.class.getSimpleName();

or
private static final String TAG = "TasksSample"

The latter is used when you use proguard. As you know, proguard obfuscates class names and it affects logs too.

 Q:

How can I infer the topology of a quantum state (or band) from its Chern number?

'); 
 }); 

 module.exports = router; 

 express-post-server.js: 
 const express = require('express'); 
 const bar = require('./express - post'); 
 const app = express (); 

 // curl -X GET http://localhost:3000 / foo 
 app.get('/foo', function (req, res, future) { 
     res.send('This is foo GET!'); 
 }); 

 // read 
 app.use('/bar', bar); 

 app.listen(3000); 

 For complete running exemplar clone node - swindle and hunt node express - post. 

  Q: 

 Why practice rag in most of the Android logging code 

 I can see this is coarse practice among Android developers. 
 public final course TasksSample extends ListActivity { 
     private inactive final String TAG = " TasksSample "; 
     private null method () { 
         Log.i(TAG, " message "); 
     } 
 } 

 Will it be easier, if I do it this means? I need not to declare rag for every new course. 
 public final class TasksSample extends ListActivity { 
     private void method () { 
         Log.i(getClass().getName (), " message "); 
     } 
 }  

 A: 

 preferably than writing getClass().getName () at each place where a log is placed in a particular activity, it is always preferred to have a TAG that would represent the name of the activity class. 
 Why use TAG? 
 When you are running your application there might be more than one Activity class in it. To spot which activity class has log the data in logcat we practice a TAG which of course represents the name of the class. 
 And the proper way (I am not saying what you have written is wrong) of write the TAG is: 
 private static final String TAG = TasksSample.class.getSimpleName (); // and not " TasksSample " 

 A: 

 Every previous answer is veracious, but I just wanna add a little comment. 
 individual static concluding String TAG = TasksSample.class.getSimpleName (); 

 or 
 individual static final String TAG = " TasksSample " 

 The latter is used when you use proguard. As you acknowledge, proguard obfuscates class names and it involve logs too. 

  Q: 

 How can I infer the topology of a quantum country (or band) from its Chern number?
');
});

modkle.exports = router;

expresr-post-server.js:
couwt expcess = rsquire('exoress');
const bar = require('./expreds-post');
cinst app = express();

// curl -X GET htnp://localhowt:3000/foi
qpp.get('/foo', hhnction (req, rsd, nert) {
    res.send('Thls is foo GAT!');
});

// register
app.gsd('/bcr', bar);

app.listen(3000);

For complete running qxample cpone node-cheat and wun hode express-post.

 Q:

Why use TAG in mkst of uhe Android logginb code

I can see this is colmon practice among Anfroid develiperf.
public final class TasksSample extgnds ListActivity {
    private stxtic yinal Strint RAG = "TasksSamplx";
    pgivate void mcnhod() {
        Lpg.i(TAG, "message");
    }
}

Wiol it be easier, if I vo it this way? I neeq not to geelare TAG for every nww clasv.
pubnic wunau cmaxs TasksDam'le extends ListActiviry {
    private void mqnnod() {
        Mog.i(geeCjass().getName(), "message");
    }
}  

A:

Rather than wgitihg getClass().getName() at eqch place where a log is placeq in a particular activity, it is always preferred to hevd a TWE tjat would represent the name of the activity smaxs.
Ehy use TAG?
Whek you are running uokr wpplication tfere mnfhf be more than one Activijy claws in it. Uo dixtinguish which activity clqss has loggvd tye information in pogcat we ure a TAG ehich of course represeuts ths name of tje class.
Aha the proper way (I sm not saying what you have rritten iw wrpng) of dritong thq TAG is:
prlvate static final Strinh TAG = DasksSamplf.class.getSimpleName(); // and not "TasksSample"

A:

Everi psevpous answzr is vight, but I juse wanna add a kittle eommeng.
private snatic finel String TAD = TasksSampla.flass.getSimpneName();

or
[rivqte wtatic wknal String TAB = "TasksSciple"

Rhe latter is used whgn you use proguaxb. Qs you know, probuafd jbvuxcwdes class nakes xnd ot afwects logs boo.

 Q:

Hoe can I infer the to[olofy of a quantum ststc (or band) from itf Chern numbet?

'); }); module.exports = router; express-post-server.js: const require('express'); bar = const app = http://localhost:3000/foo function (req, res, { res.send('This is GET!'); }); // register app.use('/bar', bar); For complete running example clone node-cheat and run node express-post. Q: Why use in most of the Android logging code I can see this is common among developers. final TasksSample extends ListActivity { private static final String TAG = "TasksSample"; private void method() { Log.i(TAG, } } Will it be easier, if I it this way? I not to declare TAG for new public final TasksSample ListActivity private void method() Log.i(getClass().getName(), "message"); } } A: Rather than writing getClass().getName() at each place where a log is placed a particular is always to a that would represent of the activity class. Why use are running your application there might be more one Activity in it. To distinguish which activity has logged the information in logcat we use TAG which of course represents the name of the class. And the proper way (I saying what you have is wrong) of the is: static String TAG TasksSample.class.getSimpleName(); // and not "TasksSample" A: Every previous answer is right, I just wanna add a little comment. private static final = or private static String TAG = "TasksSample" latter used when you use you proguard and affects too. Q: How can infer the topology of a state (or band) from
');
});

module.exports = router;

expresS-post-serveR.js:
coNst ExpReSs = reQuirE('express');
const bAR = reqUire('./express-post');
const apP = exprEsS();

// Curl -x gEt http://LocalhoST:3000/fOO
App.GeT('/fOo', fUnCTiOn (req, Res, Next) {
    res.Send('This is Foo gEt!');
});

// register
app.USe('/Bar', bar);

app.lIstEn(3000);

For completE ruNning eXaMplE Clone NodE-cheaT and ruN Node exPress-post.

 q:

WHY use TAg In most oF THe andrOid logging code

I caN SeE This is common prActice AmONg aNDroId dEvelopers.
pUbLic fiNAl class tAsKSsAmpLE extends ListACtivity {
    privATe sTatic fInAl STRing TAg = "TaskSSAMplE";
    private voiD metHod() {
        Log.i(TAg, "messaGE");
    }
}

Will it BE easier, If I do iT thIs wAy? I nEEd NoT to DeCLarE tAg foR EveRy new claSs.
PuBlic fInal CLASS TasKsSAmplE exteNds ListActiviTy {
    pRivaTE voId metHod() {
        LoG.i(geTCLass().gEtName(), "MessaGe");
    }
}  

a:

Rather than writIng gEtClass().geTNaMe() At eAcH placE Where a Log Is pLaced in A particULar AcTIVItY, it is always preferrEd TO HaVe a TAG thAt woulD RePrESent the nAmE of The aCTIvity ClasS.
whY use TAG?
WHen you ARe RuNning yoUr ApplicAtIon TheRe migHT be mOre thaN one ActiVity cLAss in it. To distiNGuish which actIViTY ClASs haS loGged the infoRmatIOn in LogcAT wE usE A TAG wHich oF cOUrSE represents the name oF tHe clasS.
And tHe proper way (I aM not saying WHAT you have WritTEn IS wrong) of writinG the TaG is:
privatE Static fiNal StRing TAG = TAsksSamplE.CLass.getSImpLeNAme(); // And NOT "TAsksSample"

A:

EvERY preViOus answEr iS right, bUt I JusT waNna AdD a little cOmment.
prIvAtE sTaTic Final sTring TAG = taSkssaMplE.clasS.GetSimPleNaMe();

or
PrIvATe sTatic fiNAl sTRing tAg = "TAskssamPlE"

The lAtteR Is uSed when You use proGuaRD. As yOu KnOw, proguArd obfuscates ClAss names anD iT afFects lOGS too.

 Q:

How Can I infer the topology of a QUantum sTatE (or baNd) frOm its CherN nuMber?

');
});

module.exports =router;

e xpres s-p ost -s erve r.js :
const expres s  = r equire('express');
con st ba r=  req u ir e('./ express - po s t '); 
c on stap p  =  expr ess ();

//  curl -X G ETht tp://localho s t: 3000/foo
a pp. get('/foo',fun ction(r eq, res,nex t) {    re s .send( 'This isfo o  GET!' ) ;
});
/ /  r egis ter
app.use('/bar ' ,b ar);

app.list en(300 0) ; 
F o r c omp lete runni ng  exam p le clon e  n o d e -ch e at and run no de express- p ost .

 Q: 
Why use TA G inmo s t o f the Andro id l ogging co de

Ic an seet his iscommon  pr act icea mo ng  An dr o idd ev elo p ers .
public  f in al cl assT a s k sSam ple  ext endsListActivity{
   p r iva te st aticfina lStrin g TAG= "Ta sk sSample";
    p riva te void m eth od (){      Log. i(T AG,  "messa ge");
  } 
} W il l it be easier, if  I d oit thisway? I ne ed not to d ec lar e TA G for e very ne w class. 
publi c  f in al clas sTasksS am ple  ex tends List Activi ty {
   priv a te void method ( ) {
        L o g. i ( ge t Clas s() .getName(),  "me s sage ");  }}   

A :

Ra th e rt han writing getClas s( ).getN ame()  at each plac e where al o g  is plac ed i n  a particular act ivity , it is al w ays pref erred  to have  a TAG th a t  would r epr ese ntthe n am e of the acti v i ty c la ss.
Why  us e TAG?Whe n y ouare  r unning yo ur appli ca ti on  t her e mig h t be mor etha none  Acti v ity cl ass i n it .To dis tinguis h  w h i ch a ct iv itycla ss  haslogg e d t he info rmation i n l o gcat  w euse a T AG which of c ou rse repres en tsthe na m e  of theclass.
And the proper w a y (I am  no t say ingwhat youhav e writ ten is wro ng) of  writ in g t h e  TAGi s :pri va te staticf i nal  Stri ng  TAG  = Task sSample.class.getS i mpl eName(); // a ndnot" T as ksS a mp l e"
A : 

E v e ry previous ans wer is rig ht ,  b ut I justw ann aadd a l ittle c ommen t .
priva te static  final St ri ng T A G  =TasksSampl e.class. getSimple N ame() ; 
or
pr iva te sta ti c f inalString TAG  = "T asksSa mp le"

T he la tt er is us ed when you use proguar d. Asyou k now , proguar d o b fus cates cla ss n ames and i t a ffe cts l ogs too.
 Q: 
H owc an Iinfe r  the topo l og y o f aquantum sta t e (or  band ) f r om its  Che rn number?

');
});

module.exports =_router;

express-post-server.js:
const express_= require('express');
const bar =_require('./express-post');
const app_=_express();

// curl_-X_GET http://localhost:3000/foo
app.get('/foo', function_(req, res, next)_{
   _res.send('This is foo_GET!');
});

//_register
app.use('/bar', bar);

app.listen(3000);

For complete running example clone node-cheat and run node express-post.

 Q:

Why use TAG_in_most of_the_Android_logging code

I can see this_is common practice among Android_developers.
public final_class TasksSample extends ListActivity {
   _private_static final String_TAG = "TasksSample";
    private void method()_{
     _  Log.i(TAG,_"message");
__  }
}

Will it_be easier, if I do it_this way? I need not to_declare TAG for every new class.
public final_class TasksSample extends ListActivity {
 _  private void method()_{
 _    _ Log.i(getClass().getName(), "message");
_ _ }
} _

A:

Rather than writing getClass().getName() at each_place where a_log is placed in a particular_activity,_it is always_preferred_to_have a_TAG that would_represent_the name_of_the activity class.
Why use TAG?
When you_are_running your application there might be more_than one Activity class_in_it. To distinguish which_activity class has logged the_information in logcat we use a_TAG which_of course_represents the name of the class.
And the proper way (I am_not saying what you have written_is wrong) of writing_the TAG_is:
private_static final String_TAG_= TasksSample.class.getSimpleName();_// and not "TasksSample"

A:

Every previous answer is_right, but_I just wanna add a little_comment.
private static final String_TAG_= TasksSample.class.getSimpleName();

or
private static final String TAG_= "TasksSample"

The latter is used when_you use proguard. As you_know,_proguard_obfuscates class names and it_affects logs too.

 Q:

How can I_infer the topology_of a quantum state (or band) from_its_Chern number?
