After reading this thread, I feel confused with JavaScript Prototype Chain, then I found these charts

http://iwiki.readthedocs.org/en/latest/javascript/js_core.html#inheritance

it's a clear chart to show JavaScript Inheritance by Prototype Chain

and

http://www.javascriptbank.com/javascript/article/JavaScript_Classical_Inheritance/

this one contains a example with code and several nice diagrams.

prototype chain ultimately falls back to Object.prototype.

prototype chain can be technically extended as long as you want, each time by setting the prototype of the subclass equal to an object of the parent class.

Hope it's also helpful for you to understand JavaScript Prototype Chain.

Google Places API also provides REST api including Places Autocomplete. https://developers.google.com/places/documentation/autocomplete

But the data retrieve from the service must use for a map.

you can apply two commands

1. git diff --patch > mypatch.patch // to generate the patch
2. git apply mypatch.patch // to apply the patch

NOTE: I wrote this answer in Jun 2013, so it's bit dated nowadays. Many things changed in Android platform since version 6 (Marshmallow, released late 2015), making the whole problem more/less obsolete. However I believe this post can still be worth reading as general problem analysis approach example.

Exception you are getting (SecurityException: Permission denied (missing INTERNET permission?)), clearly indicates that you are not allowed to do networking. That's pretty indisputable fact. But how can this happen? Usually it's either due to missing <uses-permission android:name="android.permission.INTERNET" /> entry in your AndroidManifest.xml file or, as internet permission is granted at installation not at run time, by long standing, missed bug in Android framework that causes your app to be successfully installed, but without expected permission grant.

My Manifest is correct, so how can this happen?

Theoretically, presence of uses-permission in Manifest perfectly fulfills the requirement and from developer standpoint is all that's needed to be done to be able to do networking. Moreover, since permissions are shown to the user during installation, the fact your app ended installed on user's device means s/he granted what you asked for (otherwise installation is cancelled), so assumption that if your code is executed then all requested permissions are granted is valid. And once granted, user cannot revoke the permission other way than uninstalling the app completely as standard Android framework (from AOSP) offers no such feature at the moment.

But things are getting more tricky if you also do not mind your app running on rooted devices too. There're tools available in Google Play your users can install to control permission granted to installed apps at run-time - for example: Permissions Denied and others. This can also be done with CyanogenMod, vendor brand (i.e. LG's) or other custom ROM, featuring various type of "privacy managers" or similar tools.

So if app is blocked either way, it's basically blocked intentionally by the user and if so, it is really more user problem in this case (or s/he do not understand what certain options/tools really do and what would be the consequences) than yours, because standard SDK (and most apps are written with that SDK in mind) simply does not behave that way. So I strongly doubt this problem occurs on "standard", non-rooted device with stock (or vendor like Samsung, HTC, Sony etc) ROM.

I do not want to crash...

Properly implemented permission management and/org blocking must deal with the fact that most apps may not be ready for the situation where access to certain features is both granted and not accessible at the same time, as this is kind of contradiction where app uses manifest to request access at install time. Access control done right should must make all things work as before, and still limit usability using techniques in scope of expected behavior of the feature. For example, when certain permission is granted (i.e. GPS, Internet access) such feature can be made available from the app/user perspective (i.e. you can turn GPS on. or try to connect), the altered implementation can provide no real data - i.e. GPS can always return no coordinates, like when you are indoor or have no satellite "fix". Internet access can granted as before, but you can make no successful connection as there's no data coverage or routing. Such scenarios should be expected in normal usage as well, therefore it should be handled by the apps already. As this simply can happen during normal every day usage, any crash in such situation should be most likely be related to application bugs.

We lack too much information about the environment on which this problem occurs to diagnose problem w/o guessing, but as kind of solution, you may consider using setDefaultUncaughtExceptionHandler() to catch such unexpected exceptions in future and i.e. simply show user detailed information what permission your app needs instead of just crashing. Please note that using this will most likely conflict with tools like Crittercism, ACRA and others, so be careful if you use any of these.

Notes

Please be aware that android.permission.INTERNET is not the only networking related permission you may need to declare in manifest in attempt to successfully do networking. Having INTERNET permission granted simply allows applications to open network sockets (which is basically fundamental requirement to do any network data transfer). But in case your network stack/library would like to get information about networks as well, then you will also need android.permission.ACCESS_NETWORK_STATE in your Manifest (which is i.e. required by HttpUrlConnection client (see tutorial).

Addendum (2015-07-16)

Please note that Android 6 (aka Marshmallow) introduced completely new permission management mechanism called Runtime Permissions. It gives user more control on what permission are granted (also allows selective grant) or lets one revoke already granted permissions w/o need to app removal:

This [...] introduces a new permissions model, where users can now directly manage app permissions at runtime. This model gives users improved visibility and control over permissions, while streamlining the installation and auto-update processes for app developers. Users can grant or revoke permissions individually for installed apps.

However, the changes do not affect INTERNET or ACCESS_NETWORK_STATE permissions, which are considered "Normal" permissions. The user does not need to explicitly grant these permission.

See behavior changes description page for details and make sure your app will behave correctly on newer systems too. It's is especially important when your project set targetSdk to at least 23 as then you must support new permissions model (detailed documentation). If you are not ready, ensure you keep targetSdk to at most 22 as this ensures even new Android will use old permission system when your app is installed.

JavaScript does not offer this functionality natively. And I doubt you could even create this type of functionality. For example:

var Bobby = {name: "Bobby"};
var Dad = {name: "Dad", children: [ Bobby ]};
var Mom = {name: "Mom", children: [ Bobby ]};

Who does Bobby belong to?

I landed here with the same issue, then figured it out on my own. This weird character was appearing with my HTML.

The issue is most likely your code editor. I use Espresso and sometimes run into issues like this.

To fix it, simply highlight the affected code, then go to the menu and click "convert to numeric entities". You'll see the numeric value of this character appear; simply delete it and it's gone forever.

You can pass custom http headers with RestTemplate exchange method as below.

HttpHeaders headers = new HttpHeaders();
headers.setAccept(Arrays.asList(new MediaType[] { MediaType.APPLICATION_JSON }));
headers.setContentType(MediaType.APPLICATION_JSON);
headers.set("X-TP-DeviceID", "your value");

HttpEntity<RestRequest> entityReq = new HttpEntity<RestRequest>(request, headers);

RestTemplate template = new RestTemplate();

ResponseEntity<RestResponse> respEntity = template
    .exchange("RestSvcUrl", HttpMethod.POST, entityReq, RestResponse.class);

EDIT : Below is the updated code. This link has several ways of calling rest service with examples

RestTemplate restTemplate = new RestTemplate();

HttpHeaders headers = new HttpHeaders();
headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
headers.setContentType(MediaType.APPLICATION_JSON);
headers.set("X-TP-DeviceID", "your value");

HttpEntity<String> entity = new HttpEntity<String>("parameters", headers);

ResponseEntity<Mall[]> respEntity = restTemplate.exchange(url, HttpMethod.POST, entity, Mall[].class);

Mall[] resp = respEntity.getBody();

pg_config is in postgresql-devel (libpq-dev in Debian/Ubuntu, libpq-devel on Centos/Cygwin/Babun.)

just add a variable in CSHTML file var myVariable = @"@";

and add it to your layout <span class="my-class"><a href="@myVariale" target="_blank" >link text</a></span>

**HTML Character Entity Reference Chart at W3.org**

https://dev.w3.org/html5/html-author/charref

	


!
!
"
" "
#
#
$
$
%
%
&
& &
'
'
(
(
)
)
*
* *
+
+
,
,
.
.
/
/
:
:
;
;
<
&lt; &LT;
=
&equals;
>
&gt; &GT;
?
&quest;
@
&commat;
[
&lsqb; &lbrack;
\
&bsol;
]
&rsqb; &rbrack;
^
&Hat;
_
&lowbar;
`
&grave; &DiacriticalGrave;
{
&lcub; &lbrace;
|
&verbar; &vert; &VerticalLine;
}
&rcub; &rbrace;

&nbsp; &NonBreakingSpace;
¡
&iexcl;
¢
&cent;
£
&pound;
¤
&curren;
¥
&yen;
¦
&brvbar;
§
&sect;
¨
&Dot; &die; &DoubleDot; &uml;
©
&copy; &COPY;
ª
&ordf;
«
&laquo;
¬
&not;
&shy;
®
&reg; &circledR; &REG;
¯
&macr; &OverBar; &strns;
°
&deg;
±
&plusmn; &pm; &PlusMinus;
²
&sup2;
³
&sup3;
´
&acute; &DiacriticalAcute;
µ
&micro;
¶
&para;
·
&middot; &centerdot; &CenterDot;
¸
&cedil; &Cedilla;
¹
&sup1;
º
&ordm;
»
&raquo;
¼
&frac14;
½
&frac12; &half;
¾
&frac34;
¿
&iquest;
À
&Agrave;
Á
&Aacute;
Â
&Acirc;
Ã
&Atilde;
Ä
&Auml;
Å
&Aring;
Æ
&AElig;
Ç
&Ccedil;
È
&Egrave;
É
&Eacute;
Ê
&Ecirc;
Ë
&Euml;
Ì
&Igrave;
Í
&Iacute;
Î
&Icirc;
Ï
&Iuml;
Ð
&ETH;
Ñ
&Ntilde;
Ò
&Ograve;
Ó
&Oacute;
Ô
&Ocirc;
Õ
&Otilde;
Ö
&Ouml;
×
&times;
Ø
&Oslash;
Ù
&Ugrave;
Ú
&Uacute;
Û
&Ucirc;
Ü
&Uuml;
Ý
&Yacute;
Þ
&THORN;
ß
&szlig;
à
&agrave;
á
&aacute;
â
&acirc;
ã
&atilde;
ä
&auml;
å
&aring;
æ
&aelig;
ç
&ccedil;
è
&egrave;
é
&eacute;
ê
&ecirc;
ë
&euml;
ì
&igrave;
í
&iacute;
î
&icirc;
ï
&iuml;
ð
&eth;
ñ
&ntilde;
ò
&ograve;
ó
&oacute;
ô
&ocirc;
õ
&otilde;
ö
&ouml;
÷
&divide; &div;
ø
&oslash;
ù
&ugrave;
ú
&uacute;
û
&ucirc;
ü
&uuml;
ý
&yacute;
þ
&thorn;
ÿ
&yuml;
A
&Amacr;
a
&amacr;
A
&Abreve;
a
&abreve;
A
&Aogon;
a
&aogon;
C
&Cacute;
c
&cacute;
C
&Ccirc;
c
&ccirc;
C
&Cdot;
c
&cdot;
C
&Ccaron;
c
&ccaron;
D
&Dcaron;
d
&dcaron;
Ð
&Dstrok;
d
&dstrok;
E
&Emacr;
e
&emacr;
E
&Edot;
e
&edot;
E
&Eogon;
e
&eogon;
E
&Ecaron;
e
&ecaron;
G
&Gcirc;
g
&gcirc;
G
&Gbreve;
g
&gbreve;
G
&Gdot;
g
&gdot;
G
&Gcedil;
H
&Hcirc;
h
&hcirc;
H
&Hstrok;
h
&hstrok;
I
&Itilde;
i
&itilde;
I
&Imacr;
i
&imacr;
I
&Iogon;
i
&iogon;
I
&Idot;
i
&imath; &inodot;
?
&IJlig;
?
&ijlig;
J
&Jcirc;
j
&jcirc;
K
&Kcedil;
k
&kcedil;
?
&kgreen;
L
&Lacute;
l
&lacute;
L
&Lcedil;
l
&lcedil;
L
&Lcaron;
l
&lcaron;
?
&Lmidot;
?
&lmidot;
L
&Lstrok;
l
&lstrok;
N
&Nacute;
n
&nacute;
N
&Ncedil;
n
&ncedil;
N
&Ncaron;
n
&ncaron;
?
&napos;
?
&ENG;
?
&eng;
O
&Omacr;
o
&omacr;
O
&Odblac;
o
&odblac;
Œ
&OElig;
œ
&oelig;
R
&Racute;
r
&racute;
R
&Rcedil;
r
&rcedil;
R
&Rcaron;
r
&rcaron;
S
&Sacute;
s
&sacute;
S
&Scirc;
s
&scirc;
S
&Scedil;
s
&scedil;
Š
&Scaron;
š
&scaron;
T
&Tcedil;
t
&tcedil;
T
&Tcaron;
t
&tcaron;
T
&Tstrok;
t
&tstrok;
U
&Utilde;
u
&utilde;
U
&Umacr;
u
&umacr;
U
&Ubreve;
u
&ubreve;
U
&Uring;
u
&uring;
U
&Udblac;
u
&udblac;
U
&Uogon;
u
&uogon;
W
&Wcirc;
w
&wcirc;
Y
&Ycirc;
y
&ycirc;
Ÿ
&Yuml;
Z
&Zacute;
z
&zacute;
Z
&Zdot;
z
&zdot;
Ž
&Zcaron;
ž
&zcaron;
ƒ
&fnof;
?
&imped;
?
&gacute;
?
&jmath;
ˆ
&circ;
?
&caron; &Hacek;
?
&breve; &Breve;
?
&dot; &DiacriticalDot;
°
&ring;
?
&ogon;
˜
&tilde; &DiacriticalTilde;
?
&dblac; &DiacriticalDoubleAcute;
?
&DownBreve;
_
&UnderBar;
?
&Alpha;
?
&Beta;
G
&Gamma;
?
&Delta;
?
&Epsilon;
?
&Zeta;
?
&Eta;
T
&Theta;
?
&Iota;
?
&Kappa;
?
&Lambda;
?
&Mu;
?
&Nu;
?
&Xi;
?
&Omicron;
?
&Pi;
?
&Rho;
S
&Sigma;
?
&Tau;
?
&Upsilon;
F
&Phi;
?
&Chi;
?
&Psi;
O
&Omega;
a
&alpha;
ß
&beta;
?
&gamma;
d
&delta;
e
&epsiv; &varepsilon; &epsilon;
?
&zeta;
?
&eta;
?
&theta;
?
&iota;
?
&kappa;
?
&lambda;
µ
&mu;
?
&nu;
?
&xi;
?
&omicron;
p
&pi;
?
&rho;
?
&sigmav; &varsigma; &sigmaf;
s
&sigma;
t
&tau;
?
&upsi; &upsilon;
f
&phi; &phiv; &varphi;
?
&chi;
?
&psi;
?
&omega;
?
&thetav; &vartheta; &thetasym;
?
&Upsi; &upsih;
?
&straightphi;
?
&piv; &varpi;
?
&Gammad;
?
&gammad; &digamma;
?
&kappav; &varkappa;
?
&rhov; &varrho;
?
&epsi; &straightepsilon;
?
&bepsi; &backepsilon;
?
&IOcy;
?
&DJcy;
?
&GJcy;
?
&Jukcy;
?
&DScy;
?
&Iukcy;
?
&YIcy;
?
&Jsercy;
?
&LJcy;
?
&NJcy;
?
&TSHcy;
?
&KJcy;
?
&Ubrcy;
?
&DZcy;
?
&Acy;
?
&Bcy;
?
&Vcy;
?
&Gcy;
?
&Dcy;
?
&IEcy;
?
&ZHcy;
?
&Zcy;
?
&Icy;
?
&Jcy;
?
&Kcy;
?
&Lcy;
?
&Mcy;
?
&Ncy;
?
&Ocy;
?
&Pcy;
?
&Rcy;
?
&Scy;
?
&Tcy;
?
&Ucy;
?
&Fcy;
?
&KHcy;
?
&TScy;
?
&CHcy;
?
&SHcy;
?
&SHCHcy;
?
&HARDcy;
?
&Ycy;
?
&SOFTcy;
?
&Ecy;
?
&YUcy;
?
&YAcy;
?
&acy;
?
&bcy;
?
&vcy;
?
&gcy;
?
&dcy;
?
&iecy;
?
&zhcy;
?
&zcy;
?
&icy;
?
&jcy;
?
&kcy;
?
&lcy;
?
&mcy;
?
&ncy;
?
&ocy;
?
&pcy;
?
&rcy;
?
&scy;
?
&tcy;
?
&ucy;
?
&fcy;
?
&khcy;
?
&tscy;
?
&chcy;
?
&shcy;
?
&shchcy;
?
&hardcy;
?
&ycy;
?
&softcy;
?
&ecy;
?
&yucy;
?
&yacy;
?
&iocy;
?
&djcy;
?
&gjcy;
?
&jukcy;
?
&dscy;
?
&iukcy;
?
&yicy;
?
&jsercy;
?
&ljcy;
?
&njcy;
?
&tshcy;
?
&kjcy;
?
&ubrcy;
?
&dzcy;
 
&ensp;
 
&emsp;
 
&emsp13;
 
&emsp14;
 
&numsp;
 
&puncsp;
 
&thinsp; &ThinSpace;
 
&hairsp; &VeryThinSpace;
?
&ZeroWidthSpace; &NegativeVeryThinSpace; &NegativeThinSpace; &NegativeMediumSpace; &NegativeThickSpace;
?
&zwnj;
?
&zwj;
?
&lrm;
?
&rlm;
-
&hyphen; &dash;
–
&ndash;
—
&mdash;
-
&horbar;
?
&Verbar; &Vert;
‘
&lsquo; &OpenCurlyQuote;
’
&rsquo; &rsquor; &CloseCurlyQuote;
‚
&lsquor; &sbquo;
“
&ldquo; &OpenCurlyDoubleQuote;
”
&rdquo; &rdquor; &CloseCurlyDoubleQuote;
„
&ldquor; &bdquo;
†
&dagger;
‡
&Dagger; &ddagger;
•
&bull; &bullet;
?
&nldr;
…
&hellip; &mldr;
‰
&permil;
?
&pertenk;
'
&prime;
"
&Prime;
?
&tprime;
`
&bprime; &backprime;
‹
&lsaquo;
›
&rsaquo;
?
&oline;
?
&caret;
?
&hybull;
/
&frasl;
?
&bsemi;
?
&qprime;
?
&MediumSpace;
?
&NoBreak;
?
&ApplyFunction; &af;
?
&InvisibleTimes; &it;
?
&InvisibleComma; &ic;
€
&euro;
?
&tdot; &TripleDot;
?
&DotDot;
C
&Copf; &complexes;
?
&incare;
g
&gscr;
H
&hamilt; &HilbertSpace; &Hscr;
H
&Hfr; &Poincareplane;
H
&quaternions; &Hopf;
h
&planckh;
?
&planck; &hbar; &plankv; &hslash;
I
&Iscr; &imagline;
I
&image; &Im; &imagpart; &Ifr;
L
&Lscr; &lagran; &Laplacetrf;
l
&ell;
N
&Nopf; &naturals;
?
&numero;
?
&copysr;
P
&weierp; &wp;
P
&Popf; &primes;
Q
&rationals; &Qopf;
R
&Rscr; &realine;
R
&real; &Re; &realpart; &Rfr;
R
&reals; &Ropf;
?
&rx;
™
&trade; &TRADE;
Z
&integers; &Zopf;
?
&ohm;
?
&mho;
Z
&Zfr; &zeetrf;
?
&iiota;
Å
&angst;
B
&bernou; &Bernoullis; &Bscr;
C
&Cfr; &Cayleys;
e
&escr;
E
&Escr; &expectation;
F
&Fscr; &Fouriertrf;
M
&phmmat; &Mellintrf; &Mscr;
o
&order; &orderof; &oscr;
?
&alefsym; &aleph;
?
&beth;
?
&gimel;
?
&daleth;
?
&CapitalDifferentialD; &DD;
?
&DifferentialD; &dd;
?
&ExponentialE; &exponentiale; &ee;
?
&ImaginaryI; &ii;
?
&frac13;
?
&frac23;
?
&frac15;
?
&frac25;
?
&frac35;
?
&frac45;
?
&frac16;
?
&frac56;
?
&frac18;
?
&frac38;
?
&frac58;
?
&frac78;
?
&larr; &leftarrow; &LeftArrow; &slarr; &ShortLeftArrow;
?
&uarr; &uparrow; &UpArrow; &ShortUpArrow;
?
&rarr; &rightarrow; &RightArrow; &srarr; &ShortRightArrow;
?
&darr; &downarrow; &DownArrow; &ShortDownArrow;
?
&harr; &leftrightarrow; &LeftRightArrow;
?
&varr; &updownarrow; &UpDownArrow;
?
&nwarr; &UpperLeftArrow; &nwarrow;
?
&nearr; &UpperRightArrow; &nearrow;
?
&searr; &searrow; &LowerRightArrow;
?
&swarr; &swarrow; &LowerLeftArrow;
?
&nlarr; &nleftarrow;
?
&nrarr; &nrightarrow;
?
&rarrw; &rightsquigarrow;
?
&Larr; &twoheadleftarrow;
?
&Uarr;
?
&Rarr; &twoheadrightarrow;
?
&Darr;
?
&larrtl; &leftarrowtail;
?
&rarrtl; &rightarrowtail;
?
&LeftTeeArrow; &mapstoleft;
?
&UpTeeArrow; &mapstoup;
?
&map; &RightTeeArrow; &mapsto;
?
&DownTeeArrow; &mapstodown;
?
&larrhk; &hookleftarrow;
?
&rarrhk; &hookrightarrow;
?
&larrlp; &looparrowleft;
?
&rarrlp; &looparrowright;
?
&harrw; &leftrightsquigarrow;
?
&nharr; &nleftrightarrow;
?
&lsh; &Lsh;
?
&rsh; &Rsh;
?
&ldsh;
?
&rdsh;
?
&crarr;
?
&cularr; &curvearrowleft;
?
&curarr; &curvearrowright;
?
&olarr; &circlearrowleft;
?
&orarr; &circlearrowright;
?
&lharu; &LeftVector; &leftharpoonup;
?
&lhard; &leftharpoondown; &DownLeftVector;
?
&uharr; &upharpoonright; &RightUpVector;
?
&uharl; &upharpoonleft; &LeftUpVector;
?
&rharu; &RightVector; &rightharpoonup;
?
&rhard; &rightharpoondown; &DownRightVector;
?
&dharr; &RightDownVector; &downharpoonright;
?
&dharl; &LeftDownVector; &downharpoonleft;
?
&rlarr; &rightleftarrows; &RightArrowLeftArrow;
?
&udarr; &UpArrowDownArrow;
?
&lrarr; &leftrightarrows; &LeftArrowRightArrow;
?
&llarr; &leftleftarrows;
?
&uuarr; &upuparrows;
?
&rrarr; &rightrightarrows;
?
&ddarr; &downdownarrows;
?
&lrhar; &ReverseEquilibrium; &leftrightharpoons;
?
&rlhar; &rightleftharpoons; &Equilibrium;
?
&nlArr; &nLeftarrow;
?
&nhArr; &nLeftrightarrow;
?
&nrArr; &nRightarrow;
?
&lArr; &Leftarrow; &DoubleLeftArrow;
?
&uArr; &Uparrow; &DoubleUpArrow;
?
&rArr; &Rightarrow; &Implies; &DoubleRightArrow;
?
&dArr; &Downarrow; &DoubleDownArrow;
?
&hArr; &Leftrightarrow; &DoubleLeftRightArrow; &iff;
?
&vArr; &Updownarrow; &DoubleUpDownArrow;
?
&nwArr;
?
&neArr;
?
&seArr;
?
&swArr;
?
&lAarr; &Lleftarrow;
?
&rAarr; &Rrightarrow;
?
&zigrarr;
?
&larrb; &LeftArrowBar;
?
&rarrb; &RightArrowBar;
?
&duarr; &DownArrowUpArrow;
?
&loarr;
?
&roarr;
?
&hoarr;
?
&forall; &ForAll;
?
&comp; &complement;
?
&part; &PartialD;
?
&exist; &Exists;
?
&nexist; &NotExists; &nexists;
Ø
&empty; &emptyset; &emptyv; &varnothing;
?
&nabla; &Del;
?
&isin; &isinv; &Element; &in;
?
&notin; &NotElement; &notinva;
?
&niv; &ReverseElement; &ni; &SuchThat;
?
&notni; &notniva; &NotReverseElement;
?
&prod; &Product;
?
&coprod; &Coproduct;
?
&sum; &Sum;
-
&minus;
±
&mnplus; &mp; &MinusPlus;
?
&plusdo; &dotplus;
\
&setmn; &setminus; &Backslash; &ssetmn; &smallsetminus;
*
&lowast;
°
&compfn; &SmallCircle;
v
&radic; &Sqrt;
?
&prop; &propto; &Proportional; &vprop; &varpropto;
8
&infin;
?
&angrt;
?
&ang; &angle;
?
&angmsd; &measuredangle;
?
&angsph;
|
&mid; &VerticalBar; &smid; &shortmid;
?
&nmid; &NotVerticalBar; &nsmid; &nshortmid;
?
&par; &parallel; &DoubleVerticalBar; &spar; &shortparallel;
?
&npar; &nparallel; &NotDoubleVerticalBar; &nspar; &nshortparallel;
?
&and; &wedge;
?
&or; &vee;
n
&cap;
?
&cup;
?
&int; &Integral;
?
&Int;
?
&tint; &iiint;
?
&conint; &oint; &ContourIntegral;
?
&Conint; &DoubleContourIntegral;
?
&Cconint;
?
&cwint;
?
&cwconint; &ClockwiseContourIntegral;
?
&awconint; &CounterClockwiseContourIntegral;
?
&there4; &therefore; &Therefore;
?
&becaus; &because; &Because;
:
&ratio;
?
&Colon; &Proportion;
?
&minusd; &dotminus;
?
&mDDot;
?
&homtht;
~
&sim; &Tilde; &thksim; &thicksim;
?
&bsim; &backsim;
?
&ac; &mstpos;
?
&acd;
?
&wreath; &VerticalTilde; &wr;
?
&nsim; &NotTilde;
?
&esim; &EqualTilde; &eqsim;
?
&sime; &TildeEqual; &simeq;
?
&nsime; &nsimeq; &NotTildeEqual;
?
&cong; &TildeFullEqual;
?
&simne;
?
&ncong; &NotTildeFullEqual;
˜
&asymp; &ap; &TildeTilde; &approx; &thkap; &thickapprox;
?
&nap; &NotTildeTilde; &napprox;
?
&ape; &approxeq;
?
&apid;
?
&bcong; &backcong;
?
&asympeq; &CupCap;
?
&bump; &HumpDownHump; &Bumpeq;
?
&bumpe; &HumpEqual; &bumpeq;
?
&esdot; &DotEqual; &doteq;
?
&eDot; &doteqdot;
?
&efDot; &fallingdotseq;
?
&erDot; &risingdotseq;
?
&colone; &coloneq; &Assign;
?
&ecolon; &eqcolon;
?
&ecir; &eqcirc;
?
&cire; &circeq;
?
&wedgeq;
?
&veeeq;
?
&trie; &triangleq;
?
&equest; &questeq;
?
&ne; &NotEqual;
=
&equiv; &Congruent;
?
&nequiv; &NotCongruent;
=
&le; &leq;
=
&ge; &GreaterEqual; &geq;
?
&lE; &LessFullEqual; &leqq;
?
&gE; &GreaterFullEqual; &geqq;
?
&lnE; &lneqq;
?
&gnE; &gneqq;
«
&Lt; &NestedLessLess; &ll;
»
&Gt; &NestedGreaterGreater; &gg;
?
&twixt; &between;
?
&NotCupCap;
?
&nlt; &NotLess; &nless;
?
&ngt; &NotGreater; &ngtr;
?
&nle; &NotLessEqual; &nleq;
?
&nge; &NotGreaterEqual; &ngeq;
?
&lsim; &LessTilde; &lesssim;
?
&gsim; &gtrsim; &GreaterTilde;
?
&nlsim; &NotLessTilde;
?
&ngsim; &NotGreaterTilde;
?
&lg; &lessgtr; &LessGreater;
?
&gl; &gtrless; &GreaterLess;
?
&ntlg; &NotLessGreater;
?
&ntgl; &NotGreaterLess;
?
&pr; &Precedes; &prec;
?
&sc; &Succeeds; &succ;
?
&prcue; &PrecedesSlantEqual; &preccurlyeq;
?
&sccue; &SucceedsSlantEqual; &succcurlyeq;
?
&prsim; &precsim; &PrecedesTilde;
?
&scsim; &succsim; &SucceedsTilde;
?
&npr; &nprec; &NotPrecedes;
?
&nsc; &nsucc; &NotSucceeds;
?
&sub; &subset;
?
&sup; &supset; &Superset;
?
&nsub;
?
&nsup;
?
&sube; &SubsetEqual; &subseteq;
?
&supe; &supseteq; &SupersetEqual;
?
&nsube; &nsubseteq; &NotSubsetEqual;
?
&nsupe; &nsupseteq; &NotSupersetEqual;
?
&subne; &subsetneq;
?
&supne; &supsetneq;
?
&cupdot;
?
&uplus; &UnionPlus;
?
&sqsub; &SquareSubset; &sqsubset;
?
&sqsup; &SquareSuperset; &sqsupset;
?
&sqsube; &SquareSubsetEqual; &sqsubseteq;
?
&sqsupe; &SquareSupersetEqual; &sqsupseteq;
?
&sqcap; &SquareIntersection;
?
&sqcup; &SquareUnion;
?
&oplus; &CirclePlus;
?
&ominus; &CircleMinus;
?
&otimes; &CircleTimes;
?
&osol;
?
&odot; &CircleDot;
?
&ocir; &circledcirc;
?
&oast; &circledast;
?
&odash; &circleddash;
?
&plusb; &boxplus;
?
&minusb; &boxminus;
?
&timesb; &boxtimes;
?
&sdotb; &dotsquare;
?
&vdash; &RightTee;
?
&dashv; &LeftTee;
?
&top; &DownTee;
?
&bottom; &bot; &perp; &UpTee;
?
&models;
?
&vDash; &DoubleRightTee;
?
&Vdash;
?
&Vvdash;
?
&VDash;
?
&nvdash;
?
&nvDash;
?
&nVdash;
?
&nVDash;
?
&prurel;
?
&vltri; &vartriangleleft; &LeftTriangle;
?
&vrtri; &vartriangleright; &RightTriangle;
?
&ltrie; &trianglelefteq; &LeftTriangleEqual;
?
&rtrie; &trianglerighteq; &RightTriangleEqual;
?
&origof;
?
&imof;
?
&mumap; &multimap;
?
&hercon;
?
&intcal; &intercal;
?
&veebar;
?
&barvee;
?
&angrtvb;
?
&lrtri;
?
&xwedge; &Wedge; &bigwedge;
?
&xvee; &Vee; &bigvee;
?
&xcap; &Intersection; &bigcap;
?
&xcup; &Union; &bigcup;
?
&diam; &diamond; &Diamond;
·
&sdot;
?
&sstarf; &Star;
?
&divonx; &divideontimes;
?
&bowtie;
?
&ltimes;
?
&rtimes;
?
&lthree; &leftthreetimes;
?
&rthree; &rightthreetimes;
?
&bsime; &backsimeq;
?
&cuvee; &curlyvee;
?
&cuwed; &curlywedge;
?
&Sub; &Subset;
?
&Sup; &Supset;
?
&Cap;
?
&Cup;
?
&fork; &pitchfork;
?
&epar;
?
&ltdot; &lessdot;
?
&gtdot; &gtrdot;
?
&Ll;
?
&Gg; &ggg;
?
&leg; &LessEqualGreater; &lesseqgtr;
?
&gel; &gtreqless; &GreaterEqualLess;
?
&cuepr; &curlyeqprec;
?
&cuesc; &curlyeqsucc;
?
&nprcue; &NotPrecedesSlantEqual;
?
&nsccue; &NotSucceedsSlantEqual;
?
&nsqsube; &NotSquareSubsetEqual;
?
&nsqsupe; &NotSquareSupersetEqual;
?
&lnsim;
?
&gnsim;
?
&prnsim; &precnsim;
?
&scnsim; &succnsim;
?
&nltri; &ntriangleleft; &NotLeftTriangle;
?
&nrtri; &ntriangleright; &NotRightTriangle;
?
&nltrie; &ntrianglelefteq; &NotLeftTriangleEqual;
?
&nrtrie; &ntrianglerighteq; &NotRightTriangleEqual;
?
&vellip;
?
&ctdot;
?
&utdot;
?
&dtdot;
?
&disin;
?
&isinsv;
?
&isins;
?
&isindot;
?
&notinvc;
?
&notinvb;
?
&isinE;
?
&nisd;
?
&xnis;
?
&nis;
?
&notnivc;
?
&notnivb;
?
&barwed; &barwedge;
?
&Barwed; &doublebarwedge;
?
&lceil; &LeftCeiling;
?
&rceil; &RightCeiling;
?
&lfloor; &LeftFloor;
?
&rfloor; &RightFloor;
?
&drcrop;
?
&dlcrop;
?
&urcrop;
?
&ulcrop;
¬
&bnot;
?
&profline;
?
&profsurf;
?
&telrec;
?
&target;
?
&ulcorn; &ulcorner;
?
&urcorn; &urcorner;
?
&dlcorn; &llcorner;
?
&drcorn; &lrcorner;
?
&frown; &sfrown;
?
&smile; &ssmile;
?
&cylcty;
?
&profalar;
?
&topbot;
?
&ovbar;
?
&solbar;
?
&angzarr;
?
&lmoust; &lmoustache;
?
&rmoust; &rmoustache;
?
&tbrk; &OverBracket;
?
&bbrk; &UnderBracket;
?
&bbrktbrk;
?
&OverParenthesis;
?
&UnderParenthesis;
?
&OverBrace;
?
&UnderBrace;
?
&trpezium;
?
&elinters;
?
&blank;
?
&oS; &circledS;
-
&boxh; &HorizontalLine;
¦
&boxv;
+
&boxdr;
+
&boxdl;
+
&boxur;
+
&boxul;
+
&boxvr;
¦
&boxvl;
-
&boxhd;
-
&boxhu;
+
&boxvh;
-
&boxH;
¦
&boxV;
+
&boxdR;
+
&boxDr;
+
&boxDR;
+
&boxdL;
+
&boxDl;
+
&boxDL;
+
&boxuR;
+
&boxUr;
+
&boxUR;
+
&boxuL;
+
&boxUl;
+
&boxUL;
¦
&boxvR;
¦
&boxVr;
¦
&boxVR;
¦
&boxvL;
¦
&boxVl;
¦
&boxVL;
-
&boxHd;
-
&boxhD;
-
&boxHD;
-
&boxHu;
-
&boxhU;
-
&boxHU;
+
&boxvH;
+
&boxVh;
+
&boxVH;
¯
&uhblk;
_
&lhblk;
¦
&block;
¦
&blk14;
¦
&blk12;
¦
&blk34;
?
&squ; &square; &Square;
?
&squf; &squarf; &blacksquare; &FilledVerySmallSquare;
?
&EmptyVerySmallSquare;
?
&rect;
?
&marker;
?
&fltns;
?
&xutri; &bigtriangleup;
?
&utrif; &blacktriangle;
?
&utri; &triangle;
?
&rtrif; &blacktriangleright;
?
&rtri; &triangleright;
?
&xdtri; &bigtriangledown;
?
&dtrif; &blacktriangledown;
?
&dtri; &triangledown;
?
&ltrif; &blacktriangleleft;
?
&ltri; &triangleleft;
?
&loz; &lozenge;
?
&cir;
?
&tridot;
?
&xcirc; &bigcirc;
?
&ultri;
?
&urtri;
?
&lltri;
?
&EmptySmallSquare;
?
&FilledSmallSquare;
?
&starf; &bigstar;
?
&star;
?
&phone;
?
&female;
?
&male;
?
&spades; &spadesuit;
?
&clubs; &clubsuit;
?
&hearts; &heartsuit;
?
&diams; &diamondsuit;
?
&sung;
?
&flat;
?
&natur; &natural;
?
&sharp;
?
&check; &checkmark;
?
&cross;
?
&malt; &maltese;
?
&sext;
|
&VerticalSeparator;
?
&lbbrk;
?
&rbbrk;
?
&lobrk; &LeftDoubleBracket;
?
&robrk; &RightDoubleBracket;
?
&lang; &LeftAngleBracket; &langle;
?
&rang; &RightAngleBracket; &rangle;
?
&Lang;
?
&Rang;
?
&loang;
?
&roang;
?
&xlarr; &longleftarrow; &LongLeftArrow;
?
&xrarr; &longrightarrow; &LongRightArrow;
?
&xharr; &longleftrightarrow; &LongLeftRightArrow;
?
&xlArr; &Longleftarrow; &DoubleLongLeftArrow;
?
&xrArr; &Longrightarrow; &DoubleLongRightArrow;
?
&xhArr; &Longleftrightarrow; &DoubleLongLeftRightArrow;
?
&xmap; &longmapsto;
?
&dzigrarr;
?
&nvlArr;
?
&nvrArr;
?
&nvHarr;
?
&Map;
?
&lbarr;
?
&rbarr; &bkarow;
?
&lBarr;
?
&rBarr; &dbkarow;
?
&RBarr; &drbkarow;
?
&DDotrahd;
?
&UpArrowBar;
?
&DownArrowBar;
?
&Rarrtl;
?
&latail;
?
&ratail;
?
&lAtail;
?
&rAtail;
?
&larrfs;
?
&rarrfs;
?
&larrbfs;
?
&rarrbfs;
?
&nwarhk;
?
&nearhk;
?
&searhk; &hksearow;
?
&swarhk; &hkswarow;
?
&nwnear;
?
&nesear; &toea;
?
&seswar; &tosa;
?
&swnwar;
?
&rarrc;
?
&cudarrr;
?
&ldca;
?
&rdca;
?
&cudarrl;
?
&larrpl;
?
&curarrm;
?
&cularrp;
?
&rarrpl;
?
&harrcir;
?
&Uarrocir;
?
&lurdshar;
?
&ldrushar;
?
&LeftRightVector;
?
&RightUpDownVector;
?
&DownLeftRightVector;
?
&LeftUpDownVector;
?
&LeftVectorBar;
?
&RightVectorBar;
?
&RightUpVectorBar;
?
&RightDownVectorBar;
?
&DownLeftVectorBar;
?
&DownRightVectorBar;
?
&LeftUpVectorBar;
?
&LeftDownVectorBar;
?
&LeftTeeVector;
?
&RightTeeVector;
?
&RightUpTeeVector;
?
&RightDownTeeVector;
?
&DownLeftTeeVector;
?
&DownRightTeeVector;
?
&LeftUpTeeVector;
?
&LeftDownTeeVector;
?
&lHar;
?
&uHar;
?
&rHar;
?
&dHar;
?
&luruhar;
?
&ldrdhar;
?
&ruluhar;
?
&rdldhar;
?
&lharul;
?
&llhard;
?
&rharul;
?
&lrhard;
?
&udhar; &UpEquilibrium;
?
&duhar; &ReverseUpEquilibrium;
?
&RoundImplies;
?
&erarr;
?
&simrarr;
?
&larrsim;
?
&rarrsim;
?
&rarrap;
?
&ltlarr;
?
&gtrarr;
?
&subrarr;
?
&suplarr;
?
&lfisht;
?
&rfisht;
?
&ufisht;
?
&dfisht;
?
&lopar;
?
&ropar;
?
&lbrke;
?
&rbrke;
?
&lbrkslu;
?
&rbrksld;
?
&lbrksld;
?
&rbrkslu;
?
&langd;
?

Not fully, pls track the link for fully document.

Oracle:

select * from (select foo from bar order by foo) where ROWNUM = x

There are a few attributes you should check: android:lines, android:minLines, android:maxLines. To display a maximum of 4 lines and ellipsize it, you just need android:maxLines and android:ellipsize:

<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:maxLines="4"
    android:ellipsize="marquee"
    android:text="Hai!"
    />

The event attribute of <f:ajax> can hold at least all supported DOM events of the HTML element which is been generated by the JSF component in question. An easy way to find them all out is to check all on* attribues of the JSF input component of interest in the JSF tag library documentation and then remove the "on" prefix. For example, the <h:inputText> component which renders <input type="text"> lists the following on* attributes (of which I've already removed the "on" prefix so that it ultimately becomes the DOM event type name):

• blur
• change
• click
• dblclick
• focus
• keydown
• keypress
• keyup
• mousedown
• mousemove
• mouseout
• mouseover
• mouseup
• select

Additionally, JSF has two more special event names for EditableValueHolder and ActionSource components, the real HTML DOM event being rendered depends on the component type:

• valueChange (will render as change on text/select inputs and as click on radio/checkbox inputs)
• action (will render as click on command links/buttons)

The above two are the default events for the components in question.

Some JSF component libraries have additional customized event names which are generally more specialized kinds of valueChange or action events, such as PrimeFaces <p:ajax> which supports among others tabChange, itemSelect, itemUnselect, dateSelect, page, sort, filter, close, etc depending on the parent <p:xxx> component. You can find them all in the "Ajax Behavior Events" subsection of each component's chapter in PrimeFaces Users Guide.

If you change your time column into row names, then you can use as.data.frame(as.table(mat)) for simple cases like this.

Example:

data <- c(0.1, 0.2, 0.3, 0.3, 0.4, 0.5)
dimnames <- list(time=c(0, 0.5, 1), name=c("C_0", "C_1"))
mat <- matrix(data, ncol=2, nrow=3, dimnames=dimnames)
as.data.frame(as.table(mat))
  time name Freq
1    0  C_0  0.1
2  0.5  C_0  0.2
3    1  C_0  0.3
4    0  C_1  0.3
5  0.5  C_1  0.4
6    1  C_1  0.5

In this case time and name are both factors. You may want to convert time back to numeric, or it may not matter.

This command is for start the development server :

npm run dev

Where this command is for the production build :

npm run build

Make sure to look and go inside the generated folder called 'dist'.
Then start push all those files to your server.

Late to the party but the answers above didn't seem to work for me.

My first tab fragment (uses getChildFragmentManager() for inner tabs) has the menu to show a search icon and uses android.support.v7.widget.SearchView to search within the inner tab fragment but navigating to other tabs (which also have inner tabs using getChildFragmentManager()) would not remove the search icon (as not required) and therefore still accessible with no function, maybe as I am using the below (ie outer main tabs with each inner tabs)

getChildFragmentManager(); 

However I use the below in my fragments containing/using the getChildFragmentManager() for inner tabs.

    //region onCreate
    @Override
    public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setRetainInstance(true);

    //access setHasOptionsMenu()
    setHasOptionsMenu(true);

    }
    //endregion onCreate

and then clear the menu item inside onPrepareOptionsMenu for fragments(search icon & functions)

    @Override
    public void onPrepareOptionsMenu(Menu menu) {

    super.onPrepareOptionsMenu(menu);

    //clear the menu/hide the icon & disable the search access/function ...
    //this will clear the menu entirely, so rewrite/draw the menu items after if needed
    menu.clear();

    }

Works well and navigating back to the tab/inner tab with the search icon functions re displays the search icon & functions.

Hope this helps...

Check out this awesome converter. http://labs.rampinteractive.co.uk/android_dp_px_calculator/

history.back()

or

history.go(-1)

Put this to the button onclick handle. It should look like this:

<input name="action" onclick="history.back()" type="submit" value="Cancel"/>

Just add http://download.eclipse.org/egit/updates to your Eclipse update manager.

Ran into this today at work. An admin thought it prudent to hard code Python 2.7 as the PYSPARK_PYTHON and PYSPARK_DRIVER_PYTHON in $SPARK_HOME/conf/spark-env.sh. Needless to say this broke all of our jobs that utilize any other python versions or environments (which is > 90% of our jobs). @PhillipStich points out correctly that you may not always have write permissions for this file, as is our case. While setting the configuration in the spark-submit call is an option, another alternative (when running in yarn/cluster mode) is to set the SPARK_CONF_DIR environment variable to point to another configuration script. There you could set your PYSPARK_PYTHON and any other options you may need. A template can be found in the spark-env.sh source code on github.

Yes. Problem is in wrong notation. Use:

$this->sendRequest($uri)

Instead. Or

self::staticMethod()

for static methods. Also read this for getting idea of OOP - http://www.php.net/manual/en/language.oop5.basic.php

grep $PATTERN * would be sufficient. By default, grep would skip all subdirectories. However, if you want to grep through them, grep -r $PATTERN * is the case.

A quick workaround that worked for me: try using the local ip address (127.0.0.1) instead of 'localhost' in mysql_connect(). This "forces" php to connect through TCP/IP instead of a unix socket.

It's worth trying faulthandler to identify the line or the library that is causing the issue as mentioned here https://stackoverflow.com/a/58825725/2160809 and in the comments by Karuhanga

faulthandler.enable()
// bad code goes here

or

$ python3 -q -X faulthandler
>>> /// bad cod goes here

For recent SQL:

select * from v$sql

For history:

select * from dba_hist_sqltext

This will give the correct (custom) filter when the file dialog is showing:

<input type="file" accept=".jpg, .png, .jpeg, .gif, .bmp, .tif, .tiff|image/*">

If you could not found run the command,

CentOS:

# yum install dos2unix*

# dos2unix filename.sh
dos2unix: converting file filename.sh to Unix format ...

Ubuntu / Debian:

# apt-get install dos2unix

Thanks to Novocaine88's answer to use a try catch loop I have successfully received an error message when I caused one.

    <?php
    $dbhost = "localhost";
    $dbname = "pdo";
    $dbusername = "root";
    $dbpassword = "845625";

    $link = new PDO("mysql:host=$dbhost;dbname=$dbname", $dbusername, $dbpassword);
    $link->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

    try {
        $statement = $link->prepare("INERT INTO testtable(name, lastname, age)
            VALUES(?,?,?)");

        $statement->execute(array("Bob","Desaunois",18));
    } catch(PDOException $e) {
        echo $e->getMessage();
    }
    ?>

In the following code instead of INSERT INTO it says INERT.

this is the error I got.

SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INERT INTO testtable(name, lastname, age) VALUES('Bob','Desaunoi' at line 1

When I "fix" the issue, it works as it should. Thanks alot everyone!

First, create staticfiles folder. Inside that folder create css, js, and img folder.

settings.py

import os

PROJECT_DIR = os.path.dirname(__file__)

DATABASES = {
    'default': {
         'ENGINE': 'django.db.backends.sqlite3', 
         'NAME': os.path.join(PROJECT_DIR, 'myweblabdev.sqlite'),                        
         'USER': '',
         'PASSWORD': '',
         'HOST': '',                      
         'PORT': '',                     
    }
}

MEDIA_ROOT = os.path.join(PROJECT_DIR, 'media')

MEDIA_URL = '/media/'

STATIC_ROOT = os.path.join(PROJECT_DIR, 'static')

STATIC_URL = '/static/'

STATICFILES_DIRS = (
    os.path.join(PROJECT_DIR, 'staticfiles'),
)

main urls.py

from django.conf.urls import patterns, include, url
from django.conf.urls.static import static
from django.contrib import admin
from django.contrib.staticfiles.urls import staticfiles_urlpatterns
from myweblab import settings

admin.autodiscover()

urlpatterns = patterns('',
    .......
) + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

urlpatterns += staticfiles_urlpatterns()

template

{% load static %}

<link rel="stylesheet" href="{% static 'css/style.css' %}">

You can also bring the image into the component by using the require() function.

<div style={{ backgroundImage: `url(require("images/img.svg"))` }}>

Note the two sets of curly brackets. The first set is for entering react mode and the second is for denoting object

var props = t.GetProperties().Where(
                prop => Attribute.IsDefined(prop, typeof(MyAttribute)));

This avoids having to materialize any attribute instances (i.e. it is cheaper than GetCustomAttribute[s]().

I found solution. It works fine when I throw away next line from form:

enctype="multipart/form-data"

And now it pass all parameters at request ok:

 <form action="/registration" method="post">
   <%-- error messages --%>
   <div class="form-group">
    <c:forEach items="${registrationErrors}" var="error">
    <p class="error">${error}</p>
     </c:forEach>
   </div>

You can use find_all in the following way to find every a element that has an href attribute, and print each one:

from BeautifulSoup import BeautifulSoup

html = '''<a href="some_url">next</a>
<span class="class"><a href="another_url">later</a></span>'''

soup = BeautifulSoup(html)

for a in soup.find_all('a', href=True):
    print "Found the URL:", a['href']

The output would be:

Found the URL: some_url
Found the URL: another_url

Note that if you're using an older version of BeautifulSoup (before version 4) the name of this method is findAll. In version 4, BeautifulSoup's method names were changed to be PEP 8 compliant, so you should use find_all instead.

If you want all tags with an href, you can omit the name parameter:

href_tags = soup.find_all(href=True)

(almost 10 years later...)

From iOS 13 the iPad's user agent has changed to Mac OS, for example:

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0 Safari/605.1.15

TLDR; In addition to the accepted answer; One is implicit and one is explicit.

When the HTML you've written or had generated by an application/library/framework is read by your browser it will do it's best to interpret what your HTML meant (which can vary from browser to browser). When you use the HTML entity codes, you are being more specific to the browser. You are explicitly telling it you wish to display a character to the user (and not that you are just spacing your HTML for easier readability for the developer for instance).

To be more concrete, if the output HTML were:

<html>
   <title>hello</title>
   <body>
       <p>
           Tell me and I will forget. Teach me and I
           may remember.  Involve me and I will learn.
       </p>
   </body>
</html>

The browser would only render one space between all of these words (even the ones that have been indented for better developer readability.

If, however, you put the same thing and only changed the <p> tag to:

<p>Hello&nbsp;&nbsp;&nbsp;There</p>

Then it would render the spaces, as you've instructed it more explicitly. There is some history of using these spaces for styling. This use has somewhat been diminished as CSS has matured. However, there are still valid uses for many of the HTML character entities: avoiding unexpectedly/unintentionally interpretation (e.g. if you wanted to display code). The w3 has a great page to show the other character codes.

If you really want to understand ANSI C 89, I need to correct you in one thing; In ANSI C 89 the difference between the following functions:

int main()
int main(void)
int main(int argc, char* argv[])

is:

int main()

• a function that expects unknown number of arguments of unknown types. Returns an integer representing the application software status.

int main(void)

• a function that expects no arguments. Returns an integer representing the application software status.

int main(int argc, char * argv[])

• a function that expects argc number of arguments and argv[] arguments. Returns an integer representing the application software status.

About when using each of the functions

int main(void)

• you need to use this function when your program needs no initial parameters to run/ load (parameters received from the OS - out of the program it self).

int main(int argc, char * argv[])

• you need to use this function when your program needs initial parameters to load (parameters received from the OS - out of the program it self).

About void main()

In ANSI C 89, when using void main and compiling the project AS -ansi -pedantic (in Ubuntu, e.g) you will receive a warning indicating that your main function is of type void and not of type int, but you will be able to run the project. Most C developers tend to use int main() on all of its variants, though void main() will also compile.

Here's your solution: JsFiddle

Basically, place your button into a div with centred text:

<div class="wrapper">
    <button class="button">Button</button>
</div>

With the following styles:

.wrapper {
    text-align: center;
}

.button {
    position: absolute;
    top: 50%;
}

There are many ways to skin a cat, and this is just one.

Chances are that you've not included the header file that declares system().

In order to be able to compile C++ code that uses functions which you don't (manually) declare yourself, you have to pull in the declarations. These declarations are normally stored in so-called header files that you pull into the current translation unit using the #include preprocessor directive. As the code does not #include the header file in which system() is declared, the compilation fails.

To fix this issue, find out which header file provides you with the declaration of system() and include that. As mentioned in several other answers, you most likely want to add #include <cstdlib>

Question still relevant as of Android Studio 3.5.2 for Windows.

In my specific use case, I was trying to add Gander (https://github.com/Ashok-Varma/Gander) to my list of dependencies when I keep getting this particular headache.

It turns out that I have yet to get JCenter Certificate approved in my cacerts file. I'm going through a company firewall and i had to do this with dependencies that I attempt to import. Thus, to do so:

1. Ensure that your Android Studio does not need to go through any proxy.

2. Export the certificate where you get your dependency (usually just JCenter)

3. Add the certificate to your cacerts file:

   keytool -import -alias [your-certificate-name] -keystore 'C:\Program Files\Java\jdk[version]\jre\lib\security\cacerts' -file [absolute\path\to\your\certificate].cer

4. Restart Android Studio

5. Try syncing again.

Answer is based on this one: https://stackoverflow.com/a/26183328/4972380

I solved by put as storage size 2 times the RAM size, and by putting the SD storage size the same as RAM size.

there are 2 solutions:

visit this jsfiddle

in your css you can add this:
     .input-disabled{background-color:#EBEBE4;border:1px solid #ABADB3;padding:2px 1px;}

in your js do something like this:
     $('#test').attr('readonly', true);
     $('#test').addClass('input-disabled');

Hope this help.

Another way is using hidden input field as mentioned by some of the comments. However bear in mind that, in the backend code, you need to make sure you validate this newly hidden input at correct scenario. Hence I'm not recommend this way as it will create more bugs if its not handle properly.

This is for future developers, you can also try this. Simple too

echo preg_replace('/\D/', '', '604-619-5135');

Extend UserDefaults once to don't copy-paste this solution:

extension UserDefaults {

    func hasValue(forKey key: String) -> Bool {
        return nil != object(forKey: key)
    }
}

// Example
UserDefaults.standard.hasValue(forKey: "username")

1. Layout inflator inflates/adds external XML to your current view.

2. getView() is called numerous times including when scrolled. So if it already has view inflated we don't wanna do it again since inflating is a costly process.. thats why we check if its null and then inflate it.

3. The parent view is single cell of your List..

I don't think you can do this with CSS. Instead, at regular 'word lengths' along the string, insert an HTML soft-hyphen:

ACTGATCG­AGCTGAAG­CGCAGTGC­GATGCTTC­GATGATGC­TGACGATG

This will display a hyphen at the end of the line, where it wraps, which may or may not be what you want.

Note Safari seems to wrap the long string in a <textarea> anyway, unlike Firefox.

If you are using VB.NET then this class does the job.

Imports System.Reflection
''' <summary>
''' Convert any List(Of T) to a DataTable with correct column types and converts Nullable Type values to DBNull
''' </summary>

Public Class ConvertListToDataset

    Public Function ListToDataset(Of T)(ByVal list As IList(Of T)) As DataTable

        Dim dt As New DataTable()
        '/* Create the DataTable columns */
        For Each pi As PropertyInfo In GetType(T).GetProperties()
            If pi.PropertyType.IsValueType Then
                Debug.Print(pi.Name)
            End If
            If IsNothing(Nullable.GetUnderlyingType(pi.PropertyType)) Then
                dt.Columns.Add(pi.Name, pi.PropertyType)
            Else
                dt.Columns.Add(pi.Name, Nullable.GetUnderlyingType(pi.PropertyType))
            End If
        Next

        '/* Populate the DataTable with the values in the Items in List */
        For Each item As T In list
            Dim dr As DataRow = dt.NewRow()
            For Each pi As PropertyInfo In GetType(T).GetProperties()
                dr(pi.Name) = IIf(IsNothing(pi.GetValue(item)), DBNull.Value, pi.GetValue(item))
            Next
            dt.Rows.Add(dr)
        Next
        Return dt

    End Function

End Class

I think that the following example demonstrates what you need:http://www.hacksparrow.com/base64-encoding-decoding-in-node-js.html

The essence of the article is this code part:

var fs = require('fs');

// function to encode file data to base64 encoded string
function base64_encode(file) {
    // read binary data
    var bitmap = fs.readFileSync(file);
    // convert binary data to base64 encoded string
    return new Buffer(bitmap).toString('base64');
}

// function to create file from base64 encoded string
function base64_decode(base64str, file) {
    // create buffer object from base64 encoded string, it is important to tell the constructor that the string is base64 encoded
    var bitmap = new Buffer(base64str, 'base64');
    // write buffer to file
    fs.writeFileSync(file, bitmap);
    console.log('******** File created from base64 encoded string ********');
}

// convert image to base64 encoded string
var base64str = base64_encode('kitten.jpg');
console.log(base64str);
// convert base64 string back to image 
base64_decode(base64str, 'copy.jpg');

<div style="float: left;margin-right:10px">
  <table>
    <tr>
      <td>..</td>
    </tr>
  </table>
</div>
<div style="float: left">
  <table>
    <tr>
      <td>..</td>
    </tr>
  </table>
</div>

The same as @Nix with a small change to be strongly typed:

If you don't want to query for it just create an entity, and then delete it.

                Customer customer = new Customer () { Id = id };
                context.Customers.Attach(customer);
                context.Customers.DeleteObject(customer);
                context.SaveChanges();

The Prefix function is definitely the most efficient way of solving this problem, but you can also use for-in loops like the following:

let array = [1,2,3,4,5,6,7,8,9]
let maxNum = 5
var iterationNumber = 0
var firstNumbers = [Int()]
if array.count > maxNum{
  for i in array{
    iterationNumber += 1
    if iterationNumber <= maxNum{
      firstNumbers.append(i)
    }
  }
  firstNumbers.remove(at: 0)
  print(firstNumbers)
} else {
  print("There were not \(maxNum) items in the array.")
}

This solution takes up many lines of code but checks to see if there are enough items in the array to carry out the program, then continues and solves the problem. This solution uses many basic functions including array.count, which returns the amount of items in the array, not the position of last item in the array. It also uses array.append, which adds things onto the end of the array. Lastly, it uses array.remove, which removes the array's item that has a specified position.

I have tested it it and it works for at least swift 5.

This solved the issue for me today:

cd /path/to/project
cd build
rm -r classes

Then clean&build it and run the individual files you need.

Suppose you want to set a pop-up text box for clicking a button lets say bt whose id is button, then code using Toast will somewhat look like this:

Button bt;
bt = (Button) findViewById(R.id.button);
bt.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {            
Toast.makeText(getApplicationContext(),"The text you want to display",Toast.LENGTH_LONG)
}

Or... you could simply use inverted logic. Let false mean true and vice versa.

Code sample

// bool[] isVisible = Enumerable.Repeat(true, 1000000).ToArray();
bool[] isHidden = new bool[1000000]; // Crazy-fast initialization!

// if (isVisible.All(v => v))
if (isHidden.All(v => !v))
{
    // Do stuff!
}

Use the builtin function zip():

In Python 3:

z = list(zip(x,y))

In Python 2:

z = zip(x,y)

You can do this by selecting every element of the class that is the sibling of the same class and inverting it, which will select pretty much every element on the page, so then you have to select by the class again.

eg:

<style>
    :not(.bar ~ .bar).bar {
        color: red;
    }
<div>
    <div class="foo"></div>
    <div class="bar"></div> <!-- Only this will be selected -->
    <div class="foo"></div>
    <div class="bar"></div>
    <div class="foo"></div>
    <div class="bar"></div>
</div>

When I had to solve this problem, I created a hard-coded data dictionary to map between numbers and their associated words. For example, the following might represent a few entries in the dictionary:

{1, "one"}
{2, "two"}
{30, "thirty"}

You really only need to worry about mapping numbers in the 10^0 (1,2,3, etc.) and 10^1 (10,20,30) positions because once you get to 100, you simply have to know when to use words like hundred, thousand, million, etc. in combination with your map. For example, when you have a number like 3,240,123, you get: three million two hundred forty thousand one hundred twenty three.

After you build your map, you need to work through each digit in your number and figure out the appropriate nomenclature to go with it.

Using LEFT JOIN/IS NULL:

DELETE b FROM BLOB b 
  LEFT JOIN FILES f ON f.id = b.fileid 
      WHERE f.id IS NULL

Using NOT EXISTS:

DELETE FROM BLOB 
 WHERE NOT EXISTS(SELECT NULL
                    FROM FILES f
                   WHERE f.id = fileid)

Using NOT IN:

DELETE FROM BLOB
 WHERE fileid NOT IN (SELECT f.id 
                        FROM FILES f)

Warning

Whenever possible, perform DELETEs within a transaction (assuming supported - IE: Not on MyISAM) so you can use rollback to revert changes in case of problems.

Add the jQuery UI plugin to your page:

function DateFormate(dateFormate, datetime) {
    return $.datepicker.formatDate(dateFormate, datetime);
};

I had the same problem and solved it using a boolean flag that gets set when the form is closing (the System.Timers.Timer does not have an IsDisposed property). Everywhere on the form I was starting the timer, I had it check this flag. If it was set, then don't start the timer. Here's the reason:

The Reason:

I was stopping and disposing of the timer in the form closing event. I was starting the timer in the Timer_Elapsed() event. If I were to close the form in the middle of the Timer_Elapsed() event, the timer would immediately get disposed by the Form_Closing() event. This would happen before the Timer_Elapsed() event would finish and more importantly, before it got to this line of code:

_timer.Start()

As soon as that line was executed an ObjectDisposedException() would get thrown with the error you mentioned.

The Solution:

Private Sub myForm_FormClosing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.FormClosing
    ' set the form closing flag so the timer doesn't fire even after the form is closed.
    _formIsClosing = True
    _timer.Stop()
    _timer.Dispose()
End Sub

Here's the timer elapsed event:

Private Sub Timer_Elapsed(ByVal sender As System.Object, ByVal e As System.Timers.ElapsedEventArgs) Handles _timer.Elapsed
    ' Don't want the timer stepping on itself (ie. the time interval elapses before the first call is done processing)
    _timer.Stop()

    ' do work here

    ' Only start the timer if the form is open. Without this check, the timer will run even if the form is closed.
    If Not _formIsClosing Then
        _timer.Interval = _refreshInterval
        _timer.Start() ' ObjectDisposedException() is thrown here unless you check the _formIsClosing flag.
    End If
End Sub

The interesting thing to know, even though it would throw the ObjectDisposedException when attempting to start the timer, the timer would still get started causing it to run even when the form was closed (the thread would only stop when the application was closed).

I just added class="span2" to the <li> for the dropdown items and that worked.

Did you enable the session state in the section as well?

 <system.web>
      <pages enableSessionState="true" /> 
 </system.web>

Or did you add this to the page?

 <%@Page enableSessionState="true"> 

And did you verify that the ASP.NET Session State Manager Service service is running? In your screenshot it isn't. It's set to start-up mode Manual which requires you to start it every time you want to make use of it. To start it, highlight the service and click the green play button on the toolbar. To start it automatically, edit the properties and adjust the Start-up type.

Or set the SessionState's mode property to InProc, so that the state service is not required.

 <system.web>
      <sessionState mode="InProc" />
 </system.web>

Check MSDN for all the options available to you with regards to storing data in the ASP.NET session state.

Note: It's better to have your Controller fetch the value from the session and have it add the value to the Model for your page/control (or to the ViewBag), that way the View doesn't depend on the HttpSession and you can choose a different source for this item later with minimal code changes. Or even better, not use the session state at all. It can kill you performance when you're using a lot of async javascript calls.

Check out commons math from apache. There is quite a lot there.

I used the command netstat -ano | grep "portnumber" in order to list out the port number/PID for that process. Then, you can use taskkill -f //pid 111111 to kill the process, last value being the pid you find from the first command.

One problem I run into at times is node respawning even after killing the process, so I have to use the good old task manager to manually kill the node process.

Well, there's an alternate way! You can use a button instead of hyperlink. Hence, when the button is clicked the web page specified in "name_of_webpage" is opened in the target frame named "name_of_iframe". It works for me!

<form method="post" action="name_of_webpage" target="name_of_iframe">
<input type="submit" value="any_name_you_want" />
</form>
<iframe name="name_of_iframe"></iframe>

You can pass your arguments using this encodeURIComponent function so you don't have to worry about passing any special characters.

data: "param1=getAccNos&param2="+encodeURIComponent('Dolce & Gabbana') 

OR

var someValue = 'Dolce & Gabbana';
data: "param1=getAccNos&param2="+encodeURIComponent(someValue)

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURIComponent

I prefer to use the ngModel and ngChange directives when dealing with checkboxes. ngModel allows you to bind the checked/unchecked state of the checkbox to a property on the entity:

<input type="checkbox" ng-model="entity.isChecked">

Whenever the user checks or unchecks the checkbox the entity.isChecked value will change too.

If this is all you need then you don't even need the ngClick or ngChange directives. Since you have the "Check All" checkbox, you obviously need to do more than just set the value of the property when someone checks a checkbox.

When using ngModel with a checkbox, it's best to use ngChange rather than ngClick for handling checked and unchecked events. ngChange is made for just this kind of scenario. It makes use of the ngModelController for data-binding (it adds a listener to the ngModelController's $viewChangeListeners array. The listeners in this array get called after the model value has been set, avoiding this problem).

<input type="checkbox" ng-model="entity.isChecked" ng-change="selectEntity()">

... and in the controller ...

var model = {};
$scope.model = model;

// This property is bound to the checkbox in the table header
model.allItemsSelected = false;

// Fired when an entity in the table is checked
$scope.selectEntity = function () {
    // If any entity is not checked, then uncheck the "allItemsSelected" checkbox
    for (var i = 0; i < model.entities.length; i++) {
        if (!model.entities[i].isChecked) {
            model.allItemsSelected = false;
            return;
        }
    }

    // ... otherwise ensure that the "allItemsSelected" checkbox is checked
    model.allItemsSelected = true;
};

Similarly, the "Check All" checkbox in the header:

<th>
    <input type="checkbox" ng-model="model.allItemsSelected" ng-change="selectAll()">
</th>

... and ...

// Fired when the checkbox in the table header is checked
$scope.selectAll = function () {
    // Loop through all the entities and set their isChecked property
    for (var i = 0; i < model.entities.length; i++) {
        model.entities[i].isChecked = model.allItemsSelected;
    }
};

CSS

What is the best way to... add a CSS class to the <tr> containing the entity to reflect its selected state?

If you use the ngModel approach for the data-binding, all you need to do is add the ngClass directive to the <tr> element to dynamically add or remove the class whenever the entity property changes:

<tr ng-repeat="entity in model.entities" ng-class="{selected: entity.isChecked}">

See the full Plunker here.

Zip Arrays of same length:

Using Array.prototype.map()

const zip = (a, b) => a.map((k, i) => [k, b[i]]);

console.log(zip([1,2,3], ["a","b","c"]));
// [[1, "a"], [2, "b"], [3, "c"]]

Zip Arrays of different length:

Using Array.from()

const zip = (a, b) => Array.from(Array(Math.max(b.length, a.length)), (_, i) => [a[i], b[i]]);

console.log( zip([1,2,3], ["a","b","c","d"]) );
// [[1, "a"], [2, "b"], [3, "c"], [undefined, "d"]]

Using Array.prototype.fill() and Array.prototype.map()

const zip = (a, b) => Array(Math.max(b.length, a.length)).fill().map((_,i) => [a[i], b[i]]);

console.log(zip([1,2,3], ["a","b","c","d"]));
// [[1, "a"], [2, "b"], [3, "c"], [undefined, 'd']]

.crop { 
  overflow:hidden; 
  white-space:nowrap; 
  text-overflow:ellipsis; 
  width:100px; 
}?

http://jsfiddle.net/hT3YA/

Hope this code will help

public class ThisFragment extends Fragment {

public Button button = null;
Intent intent;

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

    View rootView = inflater.inflate(R.layout.yourlayout, container, false);

    intent = new Intent(getActivity(), GoToThisActivity.class);
    button = (Button) rootView.findViewById(R.id.theButtonid);
    button.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            startActivity(intent);
        }
    });
    return rootView;
}

You can use this code, make sure you change "ThisFragment" as your fragment name, "yourlayout" as the layout name, "GoToThisActivity" change it to which activity do you want and then "theButtonid" change it with your button id you used.

1) == evaluates reference equality in this case
2) im not too sure about the equals, but why not simply overriding the compare method and plant it inside MyClass?

I have the same problem when I want to automatically start ssh service. I found that append

/etc/init.d/ssh start

~/.bashrc

What not to do

WARNING:
This answer uses ECB. ECB is not an encryption mode, it's only a building block. Using ECB as demonstrated in this answer does not actually encrypt the string securely. Do not use ECB in your code. See Scott's answer for a good solution.

I got it on myself. Actually i found some answer on google and just modified something. The result is completely insecure however.

<?php
define("ENCRYPTION_KEY", "!@#$%^&*");
$string = "This is the original data string!";

echo $encrypted = encrypt($string, ENCRYPTION_KEY);
echo "<br />";
echo $decrypted = decrypt($encrypted, ENCRYPTION_KEY);

/**
 * Returns an encrypted & utf8-encoded
 */
function encrypt($pure_string, $encryption_key) {
    $iv_size = mcrypt_get_iv_size(MCRYPT_BLOWFISH, MCRYPT_MODE_ECB);
    $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
    $encrypted_string = mcrypt_encrypt(MCRYPT_BLOWFISH, $encryption_key, utf8_encode($pure_string), MCRYPT_MODE_ECB, $iv);
    return $encrypted_string;
}

/**
 * Returns decrypted original string
 */
function decrypt($encrypted_string, $encryption_key) {
    $iv_size = mcrypt_get_iv_size(MCRYPT_BLOWFISH, MCRYPT_MODE_ECB);
    $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
    $decrypted_string = mcrypt_decrypt(MCRYPT_BLOWFISH, $encryption_key, $encrypted_string, MCRYPT_MODE_ECB, $iv);
    return $decrypted_string;
}
?>

I've lead a few design patterns discussion groups (our site) and have read 5 or 6 patterns books. I recommend starting with the Head First Design Patterns book and attending or starting a discussion group. The Head First book might look a little Hasboro at first, but most people like it after reading a chapter or two.

Use the outstanding resource - Joshua Kereivisky's A Learning Guide to Design Patterns for the pattern ordering and to help your discussion group. Out of experience the one change I suggest to the ordering is to put Strategy first. Most of today's developers have experienced some good or bad incarnation of a Factory, so starting with Factory can lead to a lot of conversation and confusion about the pattern.This tends to take focus off how to study and learn patterns which is pretty essential at that first meeting.

You can find your sample code completely here: http://www.java2s.com/Code/Java/Hibernate/OneToManyMappingbasedonSet.htm

Have a look and check the differences. specially the even_id in :

<set name="attendees" cascade="all">
    <key column="event_id"/>
    <one-to-many class="Attendee"/>
</set> 

WHERE clause is used for comparing values in the base table, whereas the HAVING clause can be used for filtering the results of aggregate functions in the result set of the query Click here!

If you are trying to do redirect in beforeAction() you should use send() method

 return $this->redirect('/some/url',302)->send();

It's a language abstraction - some languages have both, some one, some neither.

In the case of C++, the code is not run in either the stack or the heap. You can test what happens if you run out of heap memory by repeatingly calling new to allocate memory in a loop without calling delete to free it it. But make a system backup before doing this.

You can check out this post on SuperUser.

Word starts page numbering over for each new section by default.

I do it slightly differently than the post above that goes through the ribbon menus, but in both methods you have to go through the document to each section's beginning.

My method:

• open up the footer (or header if that's where your page number is)
• drag-select the page number
• right-click on it
• hit Format Page Numbers
• click on the Continue from Previous Section radio button under Page numbering

I find this right-click method to be a little faster. Also, usually if I insert the page numbers first before I start making any new sections, this problem doesn't happen in the first place.

Yes, assignment will just copy the value of l1 (which is a reference) to l2. They will both refer to the same object.

Creating a shallow copy is pretty easy though:

List<Integer> newList = new ArrayList<>(oldList);

(Just as one example.)

There is not currently any way to style HTML5 <audio> players using CSS. Instead, you can leave off the control attribute, and implement your own controls using Javascript. If you don't want to implement them all on your own, I'd recommend using an existing themeable HTML5 audio player, such as jPlayer.

Java doesn't overload operators, so you'll usually need a method for non-basic types. Try the Arrays.equals() method.

I know this is an old topic. I had the same problem. I tested all the answers about this topic. And nothing worked here... but i found another solution.

Go to pom->overview and add these to you properties:

• Name: "maven.compiler.target" Value: "1.7"

and

• Name: "maven.compiler.source" Value: "1.7"

Now do a maven update.

Tim Lentine's answer works IF you have yours specs saved. Your question did not specify that, it only stated you had imported the data. His method would not save your specs that way.

The way to save the spec of that current import is to re-open the import, hit "apend" and that will allow you to use your current import settings that MS Access picked up. (This is useful if your want to keep the import specs from an Excel format you worked on prior to importing into MS ACCESS.)

Once you're in the apend option, use Tim's instructions, which is using the advanced option and "Save As." From there, simply click cancel, and you can now import any other similar data to various tables, etc.

Interesting, I didn't know make would default to using the C compiler given rules regarding source files.

Anyway, a simple solution that demonstrates simple Makefile concepts would be:

HEADERS = program.h headers.h

default: program

program.o: program.c $(HEADERS)
    gcc -c program.c -o program.o

program: program.o
    gcc program.o -o program

clean:
    -rm -f program.o
    -rm -f program

(bear in mind that make requires tab instead of space indentation, so be sure to fix that when copying)

However, to support more C files, you'd have to make new rules for each of them. Thus, to improve:

HEADERS = program.h headers.h
OBJECTS = program.o

default: program

%.o: %.c $(HEADERS)
    gcc -c $< -o $@

program: $(OBJECTS)
    gcc $(OBJECTS) -o $@

clean:
    -rm -f $(OBJECTS)
    -rm -f program

I tried to make this as simple as possible by omitting variables like $(CC) and $(CFLAGS) that are usually seen in makefiles. If you're interested in figuring that out, I hope I've given you a good start on that.

Here's the Makefile I like to use for C source. Feel free to use it:

TARGET = prog
LIBS = -lm
CC = gcc
CFLAGS = -g -Wall

.PHONY: default all clean

default: $(TARGET)
all: default

OBJECTS = $(patsubst %.c, %.o, $(wildcard *.c))
HEADERS = $(wildcard *.h)

%.o: %.c $(HEADERS)
    $(CC) $(CFLAGS) -c $< -o $@

.PRECIOUS: $(TARGET) $(OBJECTS)

$(TARGET): $(OBJECTS)
    $(CC) $(OBJECTS) -Wall $(LIBS) -o $@

clean:
    -rm -f *.o
    -rm -f $(TARGET)

It uses the wildcard and patsubst features of the make utility to automatically include .c and .h files in the current directory, meaning when you add new code files to your directory, you won't have to update the Makefile. However, if you want to change the name of the generated executable, libraries, or compiler flags, you can just modify the variables.

In either case, don't use autoconf, please. I'm begging you! :)

To cater for the schema as well, use this format in SQL 2014

if exists(select 1 from sys.views V inner join sys.[schemas] S on  v.schema_id = s.schema_id where s.name='dbo' and v.name = 'someviewname' and v.type = 'v')
  drop view [dbo].[someviewname];
go

And just throwing it out there, to do stored procedures, because I needed that too:

if exists(select 1
          from sys.procedures p
          inner join sys.[schemas] S on p.schema_id = s.schema_id
          where
              s.name='dbo' and p.name = 'someprocname'
          and p.type in ('p', 'pc')
  drop procedure [dbo].[someprocname];
go

On Windows 7 , the only thing that worked for me is this. Go to Device Manager -> Under Android Phone -> Right Click and select 'enable'

I had the same issue "Cannot create a connection to data source...Login failed for user.." on Windows 8.1, SQL Server 2014 Developer Edition and Visual Studio 2013 Pro. All solutions offered above by other Stackoverflow Community members did not work for me.

So, I did the next steps (running all Windows applications as Administrator):

1. VS2013 SSRS: I converted my Data Source to Shared Data Source (.rds) with Windows Authentication (Integrated Security) on the Right Pane "Solution Explorer".

2. Original (non-shared) Data Source (on the Left Pane "Report Data") got "Don't Use Credentials".

3. On the Project Properties, I set for "Deployment" "Overwrite DataSources" to "True" and redeployed the Project.

After that, I could run my report without further requirements to enter Credentials. All Shared DataSources were deployed in a separate Directory "DataSources".

followings programs will execute,"one number is multiple of another" in

#include<stdio.h>
int main
{
int a,b;
printf("enter any two number\n");
scanf("%d%d",&a,&b);
if (a%b==0)
printf("this is  multiple number");
else if (b%a==0);
printf("this is multiple number");
else
printf("this is not multiple number");
return 0;
}

Try to add the following settings to web.config file.

<system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
</system.webServer>

If you don't want to use moment and want to display month name -

.config($mdDateLocaleProvider) {
    $mdDateLocaleProvider.formatDate = function(date) {      
      if(date !== null) {
        if(date.getMonthName == undefined) {
          date.getMonthName = function() {
            var monthNames = [ "January", "February", "March", "April", "May", "June", 
            "July", "August", "September", "October", "November", "December" ];
            return monthNames[this.getMonth()];
          }
        }        
        var day = date.getDate();
        var monthIndex = date.getMonth();
        var year = date.getFullYear();
        return day + ' ' + date.getMonthName() + ' ' + year;
      }
    };
  }

If g++ still gives error Try using:

g++ file.c -lstdc++

Look at this post: What is __gxx_personality_v0 for?

Make sure -lstdc++ is at the end of the command. If you place it at the beginning (i.e. before file.c), you still can get this same error.

We can add additional columns to DataFrame directly with below steps:

from pyspark.sql.functions import when
df = spark.createDataFrame([["amit", 30], ["rohit", 45], ["sameer", 50]], ["name", "age"])
df = df.withColumn("profile", when(df.age >= 40, "Senior").otherwise("Executive"))
df.show()

Try:

to_dict = lambda **k: k
apple = 1
banana = 'f'
carrot = 3
to_dict(apple=apple, banana=banana, carrot=carrot)
#{'apple': 1, 'banana': 'f', 'carrot': 3}

I find identically-specced AVDs run and load far better on my home machine (Phenom II x4 945/8GB RAM/Win7 HP 64bit) than they do on my work machine (Core2Duo/3GB RAM/Ubuntu 11.04 32bit).

As you're essentially running a virtual machine, I would personally go for nothing less than a dual core/4GB, though highly recommend a quad/8GB if you can splash out for that.

The application is a server which simply runs until the system shuts down or it receives a Ctrl+C or the console window is closed.

Due to the extraordinary nature of the application, it is not feasible to "gracefully" exit. (It may be that I could code another application which would send a "server shutdown" message but that would be overkill for one application and still insufficient for certain circumstances like when the server (Actual OS) is actually shutting down.)

Because of these circumstances I added a "ConsoleCtrlHandler" where I stop my threads and clean up my COM objects etc...

Public Declare Auto Function SetConsoleCtrlHandler Lib "kernel32.dll" (ByVal Handler As HandlerRoutine, ByVal Add As Boolean) As Boolean

Public Delegate Function HandlerRoutine(ByVal CtrlType As CtrlTypes) As Boolean

Public Enum CtrlTypes
  CTRL_C_EVENT = 0
  CTRL_BREAK_EVENT
  CTRL_CLOSE_EVENT
  CTRL_LOGOFF_EVENT = 5
  CTRL_SHUTDOWN_EVENT
End Enum

Public Function ControlHandler(ByVal ctrlType As CtrlTypes) As Boolean
.
.clean up code here
.
End Function

Public Sub Main()
.
.
.
SetConsoleCtrlHandler(New HandlerRoutine(AddressOf ControlHandler), True)
.
.
End Sub

This setup seems to work out perfectly. Here is a link to some C# code for the same thing.

You have to allocate the buffer with mallock, and give the read write the pointer to it.

#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
int main(){
    ssize_t nrd;
    int fd; 
    int fd1;

    char* buffer = malloc(100*sizeof(char));
    fd = open("bli.txt", O_RDONLY);
    fd1 = open("bla.txt", O_CREAT | O_WRONLY, S_IRUSR | S_IWUSR);
    while (nrd = read(fd,buffer,sizeof(buffer))) {
        write(fd1,buffer,nrd);
    }   

    close(fd);
    close(fd1);
    free(buffer);
    return 0;
}

Make sure that the rad file exists and contains something. It's not perfect but it works.

A double is an IEEE754 double-precision floating point number, similar to a float but with a larger range and precision.

IEEE754 single precision numbers have 32 bits (1 sign, 8 exponent and 23 mantissa bits) while double precision numbers have 64 bits (1 sign, 11 exponent and 52 mantissa bits).

A Double in Java is the class version of the double basic type - you can use doubles but, if you want to do something with them that requires them to be an object (such as put them in a collection), you'll need to box them up in a Double object.

POSIX 7 example

It is also worth checking the example from the standard: http://pubs.opengroup.org/onlinepubs/9699919799/utilities/getopts.html

aflag=
bflag=
while getopts ab: name
do
    case $name in
    a)    aflag=1;;
    b)    bflag=1
          bval="$OPTARG";;
    ?)   printf "Usage: %s: [-a] [-b value] args\n" $0
          exit 2;;
    esac
done
if [ ! -z "$aflag" ]; then
    printf "Option -a specified\n"
fi
if [ ! -z "$bflag" ]; then
    printf 'Option -b "%s" specified\n' "$bval"
fi
shift $(($OPTIND - 1))
printf "Remaining arguments are: %s\n" "$*"

And then we can try it out:

$ sh a.sh
Remaining arguments are: 
$ sh a.sh -a
Option -a specified
Remaining arguments are: 
$ sh a.sh -b
No arg for -b option
Usage: a.sh: [-a] [-b value] args
$ sh a.sh -b myval
Option -b "myval" specified
Remaining arguments are: 
$ sh a.sh -a -b myval
Option -a specified
Option -b "myval" specified
Remaining arguments are: 
$ sh a.sh remain
Remaining arguments are: remain
$ sh a.sh -- -a remain
Remaining arguments are: -a remain

Tested in Ubuntu 17.10, sh is dash 0.5.8.

Call make this way

make CFLAGS=-Dvar=42

because you do want to override your Makefile's CFLAGS, and not just the environment (which has a lower priority with regard to Makefile variables).

From Python 3 documentation (the same holds for python 2.7):

Curly braces or the set() function can be used to create sets. Note: to create an empty set you have to use set(), not {}; the latter creates an empty dictionary, a data structure that we discuss in the next section.

in python 2.7:

>>> my_set = {'foo', 'bar', 'baz', 'baz', 'foo'}
>>> my_set
set(['bar', 'foo', 'baz'])

Be aware that {} is also used for map/dict:

>>> m = {'a':2,3:'d'}
>>> m[3]
'd'
>>> m={}
>>> type(m)
<type 'dict'> 

One can also use comprehensive syntax to initialize sets:

>>> a = {x for x in """didn't know about {} and sets """ if x not in 'set' }
>>> a
set(['a', ' ', 'b', 'd', "'", 'i', 'k', 'o', 'n', 'u', 'w', '{', '}'])

Here is an alternative.

var condition = true;

var props = {
  value: 'foo',
  ...( condition && { disabled: true } )
};

var component = <div { ...props } />;

Or its inline version

var condition = true;

var component = (
  <div
    value="foo"
    { ...( condition && { disabled: true } ) } />
);

exit(X), where X is a number (according to the doc) should work. But it is not recommended by Apple and won't be accepted by the AppStore. Why? Because of these guidelines (one of my app got rejected):

We found that your app includes a UI control for quitting the app. This is not in compliance with the iOS Human Interface Guidelines, as required by the App Store Review Guidelines.

Please refer to the attached screenshot/s for reference.

The iOS Human Interface Guidelines specify,

"Always Be Prepared to Stop iOS applications stop when people press the Home button to open a different application or use a device feature, such as the phone. In particular, people don’t tap an application close button or select Quit from a menu. To provide a good stopping experience, an iOS application should:

Save user data as soon as possible and as often as reasonable because an exit or terminate notification can arrive at any time.

Save the current state when stopping, at the finest level of detail possible so that people don’t lose their context when they start the application again. For example, if your app displays scrolling data, save the current scroll position."

> It would be appropriate to remove any mechanisms for quitting your app.

Plus, if you try to hide that function, it would be understood by the user as a crash.

I figured I should share my solution, since I wasn't able to find it anywhere, and only figured it out through trial and error.

I indeed was able to transfer ownership of the repository to a team on BitBucket.

Don't add the remote URL that BitBuckets suggests:

git remote add origin https://[email protected]/teamName/repo.git

Instead, add the remote URL without your username:

git remote add origin https://bitbucket.org/teamName/repo.git

This way, when you go to pull from or push to a repo, it prompts you for your username, then for your password: everyone on the team has access to it under their own credentials. This approach only works with teams on BitBucket, even though you can manage user permissions on single-owner repos.

If you have password for your dB then

mysql -u <username> -p <DBName> < yourfile.sql

First of all, the easiest way to run things at startup is to add them to the file /etc/rc.local.

Another simple way is to use @reboot in your crontab. Read the cron manpage for details.

However, if you want to do things properly, in addition to adding a script to /etc/init.d you need to tell ubuntu when the script should be run and with what parameters. This is done with the command update-rc.d which creates a symlink from some of the /etc/rc* directories to your script. So, you'd need to do something like:

update-rc.d yourscriptname start 2

However, real init scripts should be able to handle a variety of command line options and otherwise integrate to the startup process. The file /etc/init.d/README has some details and further pointers.

So you want to split on spaces, and on commas and periods that aren't surrounded by numbers. This should work:

r" |(?<![0-9])[.,](?![0-9])"

After trying almost every key on my keyboard:

C:\Users\Tim>cd ^
Mehr? Desktop

C:\Users\Tim\Desktop>

So it seems to be the ^ key.

Comparison of different methods

I found other methods to check if a point is inside a polygon (here). I tested two of them only (is_inside_sm and is_inside_postgis) and the results were the same as the other methods.

Thanks to @epifanio, I parallelized the codes and compared them with @epifanio and @user3274748 (ray_tracing_numpy) methods. Note that both methods had a bug so I fixed them as shown in their codes below.

One more thing that I found is that the code provided for creating a polygon does not generate a closed path np.linspace(0,2*np.pi,lenpoly)[:-1]. As a result, the codes provided in above GitHub repository may not work properly. So It's better to create a closed path (first and last points should be the same).

Codes

Method 1: parallelpointinpolygon

from numba import jit, njit
import numba
import numpy as np 

@jit(nopython=True)
def pointinpolygon(x,y,poly):
    n = len(poly)
    inside = False
    p2x = 0.0
    p2y = 0.0
    xints = 0.0
    p1x,p1y = poly[0]
    for i in numba.prange(n+1):
        p2x,p2y = poly[i % n]
        if y > min(p1y,p2y):
            if y <= max(p1y,p2y):
                if x <= max(p1x,p2x):
                    if p1y != p2y:
                        xints = (y-p1y)*(p2x-p1x)/(p2y-p1y)+p1x
                    if p1x == p2x or x <= xints:
                        inside = not inside
        p1x,p1y = p2x,p2y

    return inside


@njit(parallel=True)
def parallelpointinpolygon(points, polygon):
    D = np.empty(len(points), dtype=numba.boolean) 
    for i in numba.prange(0, len(D)):   #<-- Fixed here, must start from zero
        D[i] = pointinpolygon(points[i,0], points[i,1], polygon)
    return D  

Method 2: ray_tracing_numpy_numba

@jit(nopython=True)
def ray_tracing_numpy_numba(points,poly):
    x,y = points[:,0], points[:,1]
    n = len(poly)
    inside = np.zeros(len(x),np.bool_)
    p2x = 0.0
    p2y = 0.0
    p1x,p1y = poly[0]
    for i in range(n+1):
        p2x,p2y = poly[i % n]
        idx = np.nonzero((y > min(p1y,p2y)) & (y <= max(p1y,p2y)) & (x <= max(p1x,p2x)))[0]
        if len(idx):    # <-- Fixed here. If idx is null skip comparisons below.
            if p1y != p2y:
                xints = (y[idx]-p1y)*(p2x-p1x)/(p2y-p1y)+p1x
            if p1x == p2x:
                inside[idx] = ~inside[idx]
            else:
                idxx = idx[x[idx] <= xints]
                inside[idxx] = ~inside[idxx]    

        p1x,p1y = p2x,p2y
    return inside 

Method 3: Matplotlib contains_points

path = mpltPath.Path(polygon,closed=True)  # <-- Very important to mention that the path 
                                           #     is closed (default is false)

Method 4: is_inside_sm (got it from here)

@jit(nopython=True)
def is_inside_sm(polygon, point):
    length = len(polygon)-1
    dy2 = point[1] - polygon[0][1]
    intersections = 0
    ii = 0
    jj = 1

    while ii<length:
        dy  = dy2
        dy2 = point[1] - polygon[jj][1]

        # consider only lines which are not completely above/bellow/right from the point
        if dy*dy2 <= 0.0 and (point[0] >= polygon[ii][0] or point[0] >= polygon[jj][0]):

            # non-horizontal line
            if dy<0 or dy2<0:
                F = dy*(polygon[jj][0] - polygon[ii][0])/(dy-dy2) + polygon[ii][0]

                if point[0] > F: # if line is left from the point - the ray moving towards left, will intersect it
                    intersections += 1
                elif point[0] == F: # point on line
                    return 2

            # point on upper peak (dy2=dx2=0) or horizontal line (dy=dy2=0 and dx*dx2<=0)
            elif dy2==0 and (point[0]==polygon[jj][0] or (dy==0 and (point[0]-polygon[ii][0])*(point[0]-polygon[jj][0])<=0)):
                return 2

        ii = jj
        jj += 1

    #print 'intersections =', intersections
    return intersections & 1  


@njit(parallel=True)
def is_inside_sm_parallel(points, polygon):
    ln = len(points)
    D = np.empty(ln, dtype=numba.boolean) 
    for i in numba.prange(ln):
        D[i] = is_inside_sm(polygon,points[i])
    return D  

Method 5: is_inside_postgis (got it from here)

@jit(nopython=True)
def is_inside_postgis(polygon, point):
    length = len(polygon)
    intersections = 0

    dx2 = point[0] - polygon[0][0]
    dy2 = point[1] - polygon[0][1]
    ii = 0
    jj = 1

    while jj<length:
        dx  = dx2
        dy  = dy2
        dx2 = point[0] - polygon[jj][0]
        dy2 = point[1] - polygon[jj][1]

        F =(dx-dx2)*dy - dx*(dy-dy2);
        if 0.0==F and dx*dx2<=0 and dy*dy2<=0:
            return 2;

        if (dy>=0 and dy2<0) or (dy2>=0 and dy<0):
            if F > 0:
                intersections += 1
            elif F < 0:
                intersections -= 1

        ii = jj
        jj += 1

    #print 'intersections =', intersections
    return intersections != 0  


@njit(parallel=True)
def is_inside_postgis_parallel(points, polygon):
    ln = len(points)
    D = np.empty(ln, dtype=numba.boolean) 
    for i in numba.prange(ln):
        D[i] = is_inside_postgis(polygon,points[i])
    return D  

Benchmark

Timing for 10 million points:

parallelpointinpolygon Elapsed time:      4.0122294425964355
Matplotlib contains_points Elapsed time: 14.117807388305664
ray_tracing_numpy_numba Elapsed time:     7.908452272415161
sm_parallel Elapsed time:                 0.7710440158843994
is_inside_postgis_parallel Elapsed time:  2.131121873855591

Here is the code.

import matplotlib.pyplot as plt
import matplotlib.path as mpltPath
from time import time
import numpy as np

np.random.seed(2)

time_parallelpointinpolygon=[]
time_mpltPath=[]
time_ray_tracing_numpy_numba=[]
time_is_inside_sm_parallel=[]
time_is_inside_postgis_parallel=[]
n_points=[]

for i in range(1, 10000002, 1000000): 
    n_points.append(i)
    
    lenpoly = 100
    polygon = [[np.sin(x)+0.5,np.cos(x)+0.5] for x in np.linspace(0,2*np.pi,lenpoly)]
    polygon = np.array(polygon)
    N = i
    points = np.random.uniform(-1.5, 1.5, size=(N, 2))
    
    
    #Method 1
    start_time = time()
    inside1=parallelpointinpolygon(points, polygon)
    time_parallelpointinpolygon.append(time()-start_time)

    # Method 2
    start_time = time()
    path = mpltPath.Path(polygon,closed=True)
    inside2 = path.contains_points(points)
    time_mpltPath.append(time()-start_time)

    # Method 3
    start_time = time()
    inside3=ray_tracing_numpy_numba(points,polygon)
    time_ray_tracing_numpy_numba.append(time()-start_time)

    # Method 4
    start_time = time()
    inside4=is_inside_sm_parallel(points,polygon)
    time_is_inside_sm_parallel.append(time()-start_time)

    # Method 5
    start_time = time()
    inside5=is_inside_postgis_parallel(points,polygon)
    time_is_inside_postgis_parallel.append(time()-start_time)


    
plt.plot(n_points,time_parallelpointinpolygon,label='parallelpointinpolygon')
plt.plot(n_points,time_mpltPath,label='mpltPath')
plt.plot(n_points,time_ray_tracing_numpy_numba,label='ray_tracing_numpy_numba')
plt.plot(n_points,time_is_inside_sm_parallel,label='is_inside_sm_parallel')
plt.plot(n_points,time_is_inside_postgis_parallel,label='is_inside_postgis_parallel')
plt.xlabel("N points")
plt.ylabel("time (sec)")
plt.legend(loc = 'best')
plt.show()

CONCLUSION

The fastest algorithms are:

1- is_inside_sm_parallel

2- is_inside_postgis_parallel

3- parallelpointinpolygon (@epifanio)

I use https://github.com/yabawock/bootstrap-sass-rails

Which is pretty much straight forward install, fast gem updates and followups and quick fixes in case is needed.

The best way is probably trying to open it, using just opendir() for instance.

Note that it's always best to try to use a filesystem resource, and handling any errors occuring because it doesn't exist, rather than just checking and then later trying. There is an obvious race condition in the latter approach.

First of all, the naming convention in Kotlin for constants is the same than in java (e.g : MY_CONST_IN_UPPERCASE).

How should I create it ?

1. As a top level value (recommended)

You just have to put your const outside your class declaration.

Two possibilities : Declare your const in your class file (your const have a clear relation with your class)

private const val CONST_USED_BY_MY_CLASS = 1

class MyClass { 
    // I can use my const in my class body 
}

Create a dedicated constants.kt file where to store those global const (Here you want to use your const widely across your project) :

package com.project.constants
const val URL_PATH = "https:/"

Then you just have to import it where you need it :

import com.project.constants

MyClass {
    private fun foo() {
        val url = URL_PATH
        System.out.print(url) // https://
    }
}

2. Declare it in a companion object (or an object declaration)

This is much less cleaner because under the hood, when bytecode is generated, a useless object is created :

MyClass {
    companion object {
        private const val URL_PATH = "https://"
        const val PUBLIC_URL_PATH = "https://public" // Accessible in other project files via MyClass.PUBLIC_URL_PATH
    }
}

Even worse if you declare it as a val instead of a const (compiler will generate a useless object + a useless function) :

MyClass {
    companion object {
        val URL_PATH = "https://"
    }
}

Note :

In kotlin, const can just hold primitive types. If you want to pass a function to it, you need add the @JvmField annotation. At compile time, it will be transform as a public static final variable. But it's slower than with a primitive type. Try to avoid it.

@JvmField val foo = Foo()

As simple as:

<template>
    <div id="app">
        <img src="./assets/logo.png">
    </div>
</template>
    
<script>
    export default {
    }
</script>
    
<style lang="css">
</style> 

Taken from the project generated by vue cli.

If you want to use your image as a module, do not forget to bind data to your Vuejs component:

<template>
    <div id="app">
        <img :src="image"/>
    </div>
</template>
    
<script>
    import image from "./assets/logo.png"
    
    export default {
        data: function () {
            return {
                image: image
            }
        }
    }
</script>
    
<style lang="css">
</style>

And a shorter version:

<template>
    <div id="app">
        <img :src="require('./assets/logo.png')"/>
    </div>
</template>
    
<script>
    export default {
    }
</script>
    
<style lang="css">
</style> 

The code you have given, needs to be corrected. In form tag you have to enclosed the onClick attribute value in double quote:

"window.open('google.htm','','scrollbars=no,menubar=no,height=600,width=800,resizable=yes,toolbar=no,status=no');"

You also need to take care that first parameter of window.open should also be enclosed using quotes.

SELECT <select_list> 
FROM Table_A A
LEFT JOIN Table_B B
ON A.Key = B.Key
WHERE B.Key IS NULL

Full image of join

From aticle : http://www.codeproject.com/KB/database/Visual_SQL_Joins.aspx

You are most likely pushing a string 'NULL' to the table, rather then an actual NULL, but other things may be going on as well, an illustration:

mysql> CREATE TABLE date_test (pdd DATE NOT NULL);
Query OK, 0 rows affected (0.11 sec)

mysql> INSERT INTO date_test VALUES (NULL);
ERROR 1048 (23000): Column 'pdd' cannot be null
mysql> INSERT INTO date_test VALUES ('NULL');
Query OK, 1 row affected, 1 warning (0.05 sec)

mysql> show warnings;
+---------+------+------------------------------------------+
| Level   | Code | Message                                  |
+---------+------+------------------------------------------+
| Warning | 1265 | Data truncated for column 'pdd' at row 1 |
+---------+------+------------------------------------------+
1 row in set (0.00 sec)

mysql> SELECT * FROM date_test;
+------------+
| pdd        |
+------------+
| 0000-00-00 |
+------------+
1 row in set (0.00 sec)

mysql> ALTER TABLE date_test MODIFY COLUMN pdd DATE NULL;
Query OK, 1 row affected (0.15 sec)
Records: 1  Duplicates: 0  Warnings: 0

mysql> INSERT INTO date_test VALUES (NULL);
Query OK, 1 row affected (0.06 sec)

mysql> SELECT * FROM date_test;
+------------+
| pdd        |
+------------+
| 0000-00-00 |
| NULL       |
+------------+
2 rows in set (0.00 sec)

Another simple way I found for using in LAN is

ssh [username@ip] uname -n

If you need to login command line will be

sshpass -p "[password]" ssh [username@ip] uname -n

I got another Solution. Subtract parent property value from child property value

$('child-div').offset().top - $('parent-div').offset().top;

I removed import android.R and added import android.support.v7.appcompat.*;

However this had to be done after importing appcompat by right click project and import

Not exactly!!

document.getElementById('contents'); //returns a HTML DOM Object

var contents = $('#contents');  //returns a jQuery Object

In jQuery, to get the same result as document.getElementById, you can access the jQuery Object and get the first element in the object (Remember JavaScript objects act similar to associative arrays).

var contents = $('#contents')[0]; //returns a HTML DOM Object

Follow the below steps:

1. No need to give any type of header.

2. Select body > form-data and do same as shown in the image.

3. Now in your Django view.py

def post(self, request, *args, **kwargs):
    image = request.FILES["image"]
    data = json.loads(request.data['data'])
    ...
    return Response(...)

4. You can access all the keys (id, uid etc..) from the data variable.

check this link, in very simple via the convertView, we can get the layout of a row which will be displayed in listview (which is the parentView).

View v = convertView;

if (v == null) {

    LayoutInflater vi;
    vi = LayoutInflater.from(getContext());
    v = vi.inflate(R.layout.itemlistrow, null);

}

using the position, you can get the objects of the List<Item>.

Item p = items.get(position);

after that we'll have to set the desired details of the object to the identified form widgets.

if (p != null) {

    TextView tt = (TextView) v.findViewById(R.id.id);
    TextView tt1 = (TextView) v.findViewById(R.id.categoryId);
    TextView tt3 = (TextView) v.findViewById(R.id.description);

    if (tt != null) {
        tt.setText(p.getId());
    }
    if (tt1 != null) {

        tt1.setText(p.getCategory().getId());
    }
    if (tt3 != null) {

        tt3.setText(p.getDescription());
    }
}

then it will return the constructed view which will be attached to the parentView (which is a ListView/GridView).

SELECT id FROM a -- returns 1,4,2,3
UNION
SELECT id FROM b -- returns 2,1
order by 2,1

If you're not worried about waking your phone up or bringing your app back from the dead, try:

// Param is optional, to run task on UI thread.     
Handler handler = new Handler(Looper.getMainLooper());
Runnable runnable = new Runnable() {
    @Override
    public void run() {
        // Do the task...
        handler.postDelayed(this, milliseconds) // Optional, to repeat the task.
    }
};
handler.postDelayed(runnable, milliseconds);

// Stop a repeating task like this.
handler.removeCallbacks(runnable);

since I had already compiled opencv when I discovered this problem, all I had to do was (from my opencv build directory):

make opencv_nonfree
sudo make install

To get the rest of the string after the second instance of the space delimiter:

SELECT SUBSTRING_INDEX(SUBSTRING_INDEX(MsgRest, ' ', 1), ' ', -1) AS EMailID
,  SUBSTRING_INDEX(SUBSTRING_INDEX(MsgRest, ' ', 2), ' ', -1) AS DOB
,  IF(
    LOCATE(' ', `MsgRest`) > 0,
    TRIM(SUBSTRING(SUBSTRING(`MsgRest`, LOCATE(' ', `MsgRest`) +1), 
         LOCATE(' ', SUBSTRING(`MsgRest`, LOCATE(' ', `MsgRest`) +1)) +1)),
    NULL
) AS Person
FROM inbox

To avoid nesting and ngSwitch, there is also this possibility, which leverages the way logical operators work in Javascript:

<ng-container *ngIf="foo === 1; then first; else (foo === 2 && second) || (foo === 3 && third)"></ng-container>
  <ng-template #first>First</ng-template>
  <ng-template #second>Second</ng-template>
  <ng-template #third>Third</ng-template>

"By default, when an application calls DriverManager.getConnection(url, ...) and the database specified in the URL does not yet exist, a new (empty) database is created."—H2 Database.

Addendum: @Thomas Mueller shows how to Execute SQL on Connection, but I sometimes just create and populate in the code, as suggested below.

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

/** @see http://stackoverflow.com/questions/5225700 */
public class H2MemTest {

    public static void main(String[] args) throws Exception {
        Connection conn = DriverManager.getConnection("jdbc:h2:mem:", "sa", "");
        Statement st = conn.createStatement();
        st.execute("create table customer(id integer, name varchar(10))");
        st.execute("insert into customer values (1, 'Thomas')");
        Statement stmt = conn.createStatement();
        ResultSet rset = stmt.executeQuery("select name from customer");
        while (rset.next()) {
            String name = rset.getString(1);
            System.out.println(name);
        }
    }
}

* First we declare JTextField like this

 JTextField  testField = new JTextField(10);

* We can get textfield value in String like this on any button click event.

button.addActionListener(new ActionListener(){
   public void actionPerformed(ActionEvent ae){
      String getValue = testField.getText()

   }
})

The .htaccess is either in the root-directory of your webpage or in the directory you want to protect.

Make sure to make them visible in your filesystem, because AFAIK (I'm no unix expert either) files starting with a period are invisible by default on unix-systems.

Looks like this bug has been around for quite a while! Here are some bug references you may find helpful (and may want to subscribe to / vote up, hint, hint...):

Debian bug #85123 ("sudo: SECURE_PATH still can't be overridden") (from 2001!)

It seems that Bug#20996 is still present in this version of sudo. The changelog says that it can be overridden at runtime but I haven't yet discovered how.

They mention putting something like this in your sudoers file:

Defaults secure_path="/bin:/usr/bin:/usr/local/bin"

but when I do that in Ubuntu 8.10 at least, it gives me this error:

visudo: unknown defaults entry `secure_path' referenced near line 10

Ubuntu bug #50797 ("sudo built with --with-secure-path is problematic")

Worse still, as far as I can tell, it is impossible to respecify secure_path in the sudoers file. So if, for example, you want to offer your users easy access to something under /opt, you must recompile sudo.

---

Yes. There needs to be a way to override this "feature" without having to recompile. Nothing worse then security bigots telling you what's best for your environment and then not giving you a way to turn it off.

---

This is really annoying. It might be wise to keep current behavior by default for security reasons, but there should be a way of overriding it other than recompiling from source code! Many people ARE in need of PATH inheritance. I wonder why no maintainers look into it, which seems easy to come up with an acceptable solution.

---

I worked around it like this:

mv /usr/bin/sudo /usr/bin/sudo.orig

then create a file /usr/bin/sudo containing the following:

#!/bin/bash
/usr/bin/sudo.orig env PATH=$PATH "$@"

then your regular sudo works just like the non secure-path sudo

Ubuntu bug #192651 ("sudo path is always reset")

Given that a duplicate of this bug was originally filed in July 2006, I'm not clear how long an ineffectual env_keep has been in operation. Whatever the merits of forcing users to employ tricks such as that listed above, surely the man pages for sudo and sudoers should reflect the fact that options to modify the PATH are effectively redundant.

Modifying documentation to reflect actual execution is non destabilising and very helpful.

Ubuntu bug #226595 ("impossible to retain/specify PATH")

I need to be able to run sudo with additional non-std binary folders in the PATH. Having already added my requirements to /etc/environment I was surprised when I got errors about missing commands when running them under sudo.....

I tried the following to fix this without sucess:

1. Using the "sudo -E" option - did not work. My existing PATH was still reset by sudo

2. Changing "Defaults env_reset" to "Defaults !env_reset" in /etc/sudoers -- also did not work (even when combined with sudo -E)

3. Uncommenting env_reset (e.g. "#Defaults env_reset") in /etc/sudoers -- also did not work.

4. Adding 'Defaults env_keep += "PATH"' to /etc/sudoers -- also did not work.

Clearly - despite the man documentation - sudo is completely hardcoded regarding PATH and does not allow any flexibility regarding retaining the users PATH. Very annoying as I can't run non-default software under root permissions using sudo.

The parent component can manage child state passing a prop to child and the child convert this prop in state using componentWillReceiveProps.

class ParentComponent extends Component {
  state = { drawerOpen: false }
  toggleChildMenu = () => {
    this.setState({ drawerOpen: !this.state.drawerOpen })
  }
  render() {
    return (
      <div>
        <button onClick={this.toggleChildMenu}>Toggle Menu from Parent</button>
        <ChildComponent drawerOpen={this.state.drawerOpen} />
      </div>
    )
  }
}

class ChildComponent extends Component {
  constructor(props) {
    super(props)
    this.state = {
      open: false
    }
  }

  componentWillReceiveProps(props) {
    this.setState({ open: props.drawerOpen })
  }

  toggleMenu() {
    this.setState({
      open: !this.state.open
    })
  }

  render() {
    return <Drawer open={this.state.open} />
  }
}

It's not firing because the value hasn't "changed". It's the same value. Unfortunately, you can't achieve the desired behaviour using the change event.

You can handle the blur event and do whatever processing you need when the user leaves the select box. That way you can run the code you need even if the user selects the same value.

Add a common class to all the div. For example add foo to all the divs.

$('.foo').each(function () {
   $(this).dialog({
    autoOpen: false,
    show: {
      effect: "blind",
      duration: 1000
    },
    hide: {
      effect: "explode",
      duration: 1000
    }
  });
});

It may be useful

string path = @"address/to/the/file.extension";

using (StreamReader sr = new StreamReader(path))
{ 
    Console.WriteLine(sr.CurrentEncoding);                        
}

You need to prevent the default event (following the link), otherwise your link will load a new page:

    $(document).ready(function(){
        $('.play_navigation a').click(function(e){
            e.preventDefault();
            console.log("this is the click");
        });
    });

As pointed out in comments, if your link has no href, then it's not a link, use something else.

Not working? Your code is A MESS! and ready() events everywhere... clean it, put all your scripts in ONE ready event and then try again, it will very likely sort things out.

You're getting final 0 because your while loop is being executed in a sub (shell) process and any changes made there are not reflected in the current (parent) shell.

Correct script:

while read -r country _; do
  if [ "US" = "$country" ]; then
        ((USCOUNTER++))
        echo "US counter $USCOUNTER"
  fi
done < "$FILE"

Dictionary is typed (so valuetypes don't need boxing), a Hashtable isn't (so valuetypes need boxing). Hashtable has a nicer way of obtaining a value than dictionary IMHO, because it always knows the value is an object. Though if you're using .NET 3.5, it's easy to write an extension method for dictionary to get similar behavior.

If you need multiple values per key, check out my sourcecode of MultiValueDictionary here: multimap in .NET

You need more than a regex, for example "9999-99-00" isn't a valid date. There's a SimpleDateFormat class that's built to do this. More heavyweight, but more comprehensive.

e.g.

SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");

boolean isValidDate(string input) {
     try {
          format.parse(input);
          return true;
     }
     catch(ParseException e){
          return false;
     }
}

Unfortunately, SimpleDateFormat is both heavyweight and not thread-safe.

From linux 14.04 to MySql 5.7, using cat command piped with mysql login:

cat /Desktop/test.sql | sudo mysql -uroot -p 

You can use this method for many MySQL commands to execute directly from Shell. Eg:

echo "USE my_db; SHOW tables;" | sudo mysql -uroot -p 

Make sure you separate your commands with semicolon (';').

I didn't see this approach in the answers above and thought it is a good contribution.

This is for Ubunutu 14.04:

In file /etc/apache2/apache2.conf it should be as below without the directory name:

<Directory /home/username>
    Options Indexes FollowSymLinks
    AllowOverride All
    Require all granted
</Directory>

And in file /etc/apache2/sites-available/000-default.conf you should include the custom directory name, i.e., www:

DocumentRoot /home/username/www

If it is not as above, it will give you an error when loading the server:

Forbidden You don't have permission to access / on this server

You need to tell the compiler you want to do String concatenation by starting the sequence with a string, even an empty one. Like so:

System.out.println("" + char1 + char2 + char3...);

You can also solve this problem by creating an array of values and assigning that array:

newheaders <- c("a", "b", "c", ... "x")
colnames(data) <- newheaders

• "Search"->"File"
• Enter text, file pattern and projects
• "Replace"
• Enter new text

Voilà...

Generalizing and simplifying psihodelia's answer. If you want to change the current size of the figure by a factor sizefactor

import matplotlib.pyplot as plt

# here goes your code

fig_size = plt.gcf().get_size_inches() #Get current size
sizefactor = 0.8 #Set a zoom factor
# Modify the current size by the factor
plt.gcf().set_size_inches(sizefactor * fig_size) 

After changing the current size, it might occur that you have to fine tune the subplot layout. You can do that in the figure window GUI, or by means of the command subplots_adjust

For example,

plt.subplots_adjust(left=0.16, bottom=0.19, top=0.82)

Because it has already been pushed, you shouldn't directly manipulate history. git revert will revert specific changes from a commit using a new commit, so as to not manipulate commit history.

I ended her with the same problem and I could not use the the solution with onEditorAction or onFocusChange and did not want to try the timer. A timer is too dangerous for may taste, because of all the threads and too unpredictable, as you do not know when you code is executed.

The onEditorAction do not catch when the user leave without using a button and if you use it please notice that KeyEvent can be null. The focus is unreliable at both ends the user can get focus and leave without enter any text or selecting the field and the user do not need to leave the last EditText field.

My solution use onFocusChange and a flag set when the user starts editing text and a function to get the text from the last focused view, which I call when need.

I just clear the focus on all my text fields to tricker the leave text view code, The clearFocus code is only executed if the field has focus. I call the function in onSaveInstanceState so I do not have to save the flag (mEditing) as a state of the EditText view and when important buttons is clicked and when the activity is closed.

Be careful with TexWatcher as it is call often I use the condition on focus to not react when the onRestoreInstanceState code entering text. I

final EditText mEditTextView = (EditText) getView();

    mEditTextView.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {

        }

        @Override
        public void afterTextChanged(Editable s) {
            if (!mEditing && mEditTextView.hasFocus()) {
                mEditing = true;
            }
        }
    });
    mEditTextView.setOnFocusChangeListener(new View.OnFocusChangeListener() {

        @Override
        public void onFocusChange(View v, boolean hasFocus) {
            if (!hasFocus && mEditing) {
                mEditing = false;
                ///Do the thing
            }
        }
    });
protected void saveLastOpenField(){
    for (EditText view:getFields()){
            view.clearFocus();
    }
}

TL;DR
event.preventDefault()
Prevents the browsers default behaviour (such as opening a link), but does not stop the event from bubbling up the DOM.

event.stopPropagation()
Prevents the event from bubbling up the DOM, but does not stop the browsers default behaviour.

return false;
Usually seen in jQuery code, it Prevents the browsers default behaviour, Prevents the event from bubbling up the DOM, and immediately Returns from any callback.

One should checkout this really nice & easy 4 min read with examples from where the above piece was copied from.

Let's fit the model:

> library(ISwR)
> fit <- lm(metabolic.rate ~ body.weight, rmr)
> summary(fit)

Call:
lm(formula = metabolic.rate ~ body.weight, data = rmr)

Residuals:
    Min      1Q  Median      3Q     Max 
-245.74 -113.99  -32.05  104.96  484.81 

Coefficients:
            Estimate Std. Error t value Pr(>|t|)    
(Intercept) 811.2267    76.9755  10.539 2.29e-13 ***
body.weight   7.0595     0.9776   7.221 7.03e-09 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 

Residual standard error: 157.9 on 42 degrees of freedom
Multiple R-squared: 0.5539, Adjusted R-squared: 0.5433 
F-statistic: 52.15 on 1 and 42 DF,  p-value: 7.025e-09 

The 95% confidence interval for the slope is the estimated coefficient (7.0595) ± two standard errors (0.9776).

This can be computed using confint:

> confint(fit, 'body.weight', level=0.95)
               2.5 % 97.5 %
body.weight 5.086656 9.0324

you can use WMI in .net too but you're then dependent on the wmi service running etc. Sometimes it works locally, but then fail when the same code is run on servers. I believe that's a namespace issue, related to the "names" whose values you're reading.

try this:

import pylab
from scipy import misc

pylab.imshow(misc.lena(),cmap=pylab.gray())
pylab.show()

You could try this via SSH: rm -rf foldernamehere

You could set your _JAVA_OPTIONS environmental variable. For example in bash this would do the trick:

export _JAVA_OPTIONS=-Djava.io.tmpdir=/new/tmp/dir

I put that into my bash login script and it seems to do the trick.

1. Login to your Facebook.

2. Go to http://graph.facebook.com

3. You will find all your feeds with their corresponding access codes. e.g https://graph.facebook.com/me/home?access_token=2227470867|2.AQAQ6FqN8IW-PUrR.3600.1309471200.0-137977022924629|0sbmdhJN6o9y9J4GDWs8xEygyX8

Enjoy!

The most frequent cause of "no debugging symbols found" when -g is present is that there is some "stray" -s or -S argument somewhere on the link line.

From man ld:

   -s
   --strip-all
       Omit all symbol information from the output file.

   -S
   --strip-debug
       Omit debugger symbol information (but not all symbols) from the output file.

I'm on windows and had the same issue.

I used the below code :

install.packages("devtools", type = "win.binary")

Then library(devtools) worked for me.

This works for me (Python 2)

s = "ABCD"
b = bytearray(s)

# if you print whole b, it still displays it as if its original string
print b

# but print first item from the array to see byte value
print b[0]

Reference: http://www.dotnetperls.com/bytes-python

Using

@Scripts.Render("~/scripts/myScript.js")

or

@Styles.Render("~/styles/myStylesheet.css")

could work for you.

https://stackoverflow.com/a/36157950/2924015

There seem to be many links and other such stuff, but no actual code using pipes. The advantage of using java.io.PipedInputStream and java.io.PipedOutputStream is that there is no additional consumption of memory. ByteArrayOutputStream.toByteArray() returns a copy of the original buffer, so that means that whatever you have in memory, you now have two copies of it. Then writing to an InputStream means you now have three copies of the data.

The code:

// take the copy of the stream and re-write it to an InputStream
PipedInputStream in = new PipedInputStream();
final PipedOutputStream out = new PipedOutputStream(in);
new Thread(new Runnable() {
    public void run () {
        try {
            // write the original OutputStream to the PipedOutputStream
            // note that in order for the below method to work, you need
            // to ensure that the data has finished writing to the
            // ByteArrayOutputStream
            originalByteArrayOutputStream.writeTo(out);
        }
        catch (IOException e) {
            // logging and exception handling should go here
        }
        finally {
            // close the PipedOutputStream here because we're done writing data
            // once this thread has completed its run
            if (out != null) {
                // close the PipedOutputStream cleanly
                out.close();
            }
        }   
    }
}).start();

This code assumes that the originalByteArrayOutputStream is a ByteArrayOutputStream as it is usually the only usable output stream, unless you're writing to a file. I hope this helps! The great thing about this is that since it's in a separate thread, it also is working in parallel, so whatever is consuming your input stream will be streaming out of your old output stream too. That is beneficial because the buffer can remain smaller and you'll have less latency and less memory usage.

ExpandoObject is what are you looking for.

dynamic MyDynamic = new ExpandoObject(); // note, the type MUST be dynamic to use dynamic invoking.
MyDynamic.A = "A";
MyDynamic.B = "B";
MyDynamic.C = "C";
MyDynamic.TheAnswerToLifeTheUniverseAndEverything = 42;

You can use with_together for this purpose:

- name: Copy multiple files to multiple directories
  copy: src={{ item.0 }} dest={{ item.1 }}
  with_together:
    - [ 'file1', 'file2', 'file3' ]
    - [ '/dir1/', '/dir2/', '/dir3/' ]

All the validation from model are skipped when we use validate: false

user = User.new(....)
user.save(validate: false)

Yes it can be eliminated with the /Yc options like others have pointed out but most likely you wouldn't need to touch it to fix it. Why are you getting this error in the first place without changing any settings? You might have 'cleaned' the project and than try to compile a single cpp file. You would get this error in that case because the precompiler header is now missing. Just build the whole project (even if unsuccessful) and than build any single cpp file and you won't get this error.

A fast way of doing this is to clone using the --bare keyword and then check the log:

git clone --bare git@giturl tmpdir
cd tmpdir
git log branch

It's valid in C for historical reasons. C traditionally specified that the type of a string literal was char * rather than const char *, although it qualified it by saying that you're not actually allowed to modify it.

When you use a cast, you're essentially telling the compiler that you know better than the default type matching rules, and it makes the assignment OK.

if you use typescript then you can :

import { Watch } from "vue-property-decorator";_x000D_
_x000D_
.._x000D_
_x000D_
@Watch("$store.state.something")_x000D_
private watchSomething() {_x000D_
   // use this.$store.state.something for access_x000D_
   ..._x000D_
}

3 steps:

1. Check the sorce code (HTML) of YouTube, you'll get the link like this (http%253A%252F%252Fo-o.preferred.telemar-cnf1.v18.lscache6.c.youtube.com%252Fvideoplayback ...);

2. Decode the url (remove the codes %2B,%25 etc), create a decoder with the codes: http://www.w3schools.com/tags/ref_urlencode.asp and use the function Uri.decode(url) to replace invalid escaped octets;

3. Use the code to download stream:

   URL u = null;
   InputStream is = null;  
   
   try {
       u = new URL(url);
       is = u.openStream(); 
       HttpURLConnection huc = (HttpURLConnection)u.openConnection(); //to know the size of video
       int size = huc.getContentLength();                 
   
       if(huc != null) {
           String fileName = "FILE.mp4";
           String storagePath = Environment.getExternalStorageDirectory().toString();
           File f = new File(storagePath,fileName);
   
           FileOutputStream fos = new FileOutputStream(f);
           byte[] buffer = new byte[1024];
           int len1 = 0;
           if(is != null) {
               while ((len1 = is.read(buffer)) > 0) {
                   fos.write(buffer,0, len1);  
               }
           }
           if(fos != null) {
               fos.close();
           }
       }                       
   } catch (MalformedURLException mue) {
       mue.printStackTrace();
   } catch (IOException ioe) {
       ioe.printStackTrace();
   } finally {
       try {               
           if(is != null) {
               is.close();
           }
       } catch (IOException ioe) {
           // just going to ignore this one
       }
   }
   

That's all, most of stuff you'll find on the web!!!

#ifndef <token>
/* code */
#else
/* code to include if the token is defined */
#endif

#ifndef checks whether the given token has been #defined earlier in the file or in an included file; if not, it includes the code between it and the closing #else or, if no #else is present, #endif statement. #ifndef is often used to make header files idempotent by defining a token once the file has been included and checking that the token was not set at the top of that file.

#ifndef _INCL_GUARD
#define _INCL_GUARD
#endif

string a = "", b = a , c = a, d = a, e = a, f =a;

I'm writtinga phonegap app, and checkboxes vary in size, look, etc. So I made my own simple checkbox:

First the HTML code:

<span role="checkbox"/>

Then the CSS:

[role=checkbox]{
    background-image: url(../img/checkbox_nc.png);
    height: 15px;
    width: 15px;
    display: inline-block;
    margin: 0 5px 0 5px;
    cursor: pointer;
}

.checked[role=checkbox]{
    background-image: url(../img/checkbox_c.png);
}

To toggle checkbox state, I used JQuery:

CLICKEVENT='touchend';
function createCheckboxes()
{
    $('[role=checkbox]').bind(CLICKEVENT,function()
    {
        $(this).toggleClass('checked');
    });
}

But It can easily be done without it...

Hope it can help!

When I tried @PaulSamsotha's solution with Jersey client 2.21.1, there was 400 error. It worked when I added following in my client code:

MediaType contentType = MediaType.MULTIPART_FORM_DATA_TYPE;
contentType = Boundary.addBoundary(contentType);

Response response = t.request()
        .post(Entity.entity(multipartEntity, contentType));

instead of hardcoded MediaType.MULTIPART_FORM_DATA in POST request call.

The reason this is needed is because when you use a different Connector (like Apache) for the Jersey Client, it is unable to alter outbound headers, which is required to add a boundary to the Content-Type. This limitation is explained in the Jersey Client docs. So if you want to use a different Connector, then you need to manually create the boundary.

Other answers have given clear enough examples of a record referencing another record in the same table.

There are even valid use cases for a record referencing itself in the same table. For example, a point of sale system accepting many tenders may need to know which tender to use for change when the payment is not the exact value of the sale. For many tenders that's the same tender, for others that's domestic cash, for yet other tenders, no form of change is allowed.

All this can be pretty elegantly represented with a single tender attribute which is a foreign key referencing the primary key of the same table, and whose values sometimes match the respective primary key of same record. In this example, the absence of value (also known as NULL value) might be needed to represent an unrelated meaning: this tender can only be used at its full value.

Popular relational database management systems support this use case smoothly.

Take-aways:

1. When inserting a record, the foreign key reference is verified to be present after the insert, rather than before the insert.

2. When inserting multiple records with a single statement, the order in which the records are inserted matters. The constraints are checked for each record separately.

3. Certain other data patterns, such as those involving circular dependences on record level going through two or more tables, cannot be purely inserted at all, or at least not with all the foreign keys enabled, and they have to be established using a combination of inserts and updates (if they are truly necessary).

As for me, most elegant way is yield break

initialize the Session class in the constructor of controller using

$this->load->library('session');

for example :

 function __construct()
   {
    parent::__construct();
    $this->load->model('user','',TRUE);
    $this->load->model('user_activity','',TRUE);
    $this->load->library('session');
   }

For posterity

I never use PHP so I completely forgot where apache was installed on my mac as it was running on port 8080 mocking me, installed in a non-standard path. After giving up on the internet, I tried this...

httpd -t -D DUMP_INCLUDES

Because httpd was running it produced the httpd.config path and then the clouds parted and the sun shown brightly on my face. Victory! as within it lies the path to localhost.

ServerRoot "/your/path"

Use a Kotlin extension function

fun Fragment?.runOnUiThread(action: () -> Unit) {
    this ?: return
    if (!isAdded) return // Fragment not attached to an Activity
    activity?.runOnUiThread(action)
}

Then, in any Fragment you can just call runOnUiThread. This keeps calls consistent across activities and fragments.

runOnUiThread {
    // Call your code here
}

NOTE: If Fragment is no longer attached to an Activity, callback will not be called and no exception will be thrown

If you want to access this style from anywhere, you can add a common object and import the method:

object ThreadUtil {
    private val handler = Handler(Looper.getMainLooper())

    fun runOnUiThread(action: () -> Unit) {
        if (Looper.myLooper() != Looper.getMainLooper()) {
            handler.post(action)
        } else {
            action.invoke()
        }
    }
}

This is an implementation made for FINITE LINE SEGMENTS, not infinite lines like most other functions here seem to be (that's why I made this).

Implementation of theory by Paul Bourke.

Python:

def dist(x1, y1, x2, y2, x3, y3): # x3,y3 is the point
    px = x2-x1
    py = y2-y1

    norm = px*px + py*py

    u =  ((x3 - x1) * px + (y3 - y1) * py) / float(norm)

    if u > 1:
        u = 1
    elif u < 0:
        u = 0

    x = x1 + u * px
    y = y1 + u * py

    dx = x - x3
    dy = y - y3

    # Note: If the actual distance does not matter,
    # if you only want to compare what this function
    # returns to other results of this function, you
    # can just return the squared distance instead
    # (i.e. remove the sqrt) to gain a little performance

    dist = (dx*dx + dy*dy)**.5

    return dist

AS3:

public static function segmentDistToPoint(segA:Point, segB:Point, p:Point):Number
{
    var p2:Point = new Point(segB.x - segA.x, segB.y - segA.y);
    var something:Number = p2.x*p2.x + p2.y*p2.y;
    var u:Number = ((p.x - segA.x) * p2.x + (p.y - segA.y) * p2.y) / something;

    if (u > 1)
        u = 1;
    else if (u < 0)
        u = 0;

    var x:Number = segA.x + u * p2.x;
    var y:Number = segA.y + u * p2.y;

    var dx:Number = x - p.x;
    var dy:Number = y - p.y;

    var dist:Number = Math.sqrt(dx*dx + dy*dy);

    return dist;
}

Java

private double shortestDistance(float x1,float y1,float x2,float y2,float x3,float y3)
    {
        float px=x2-x1;
        float py=y2-y1;
        float temp=(px*px)+(py*py);
        float u=((x3 - x1) * px + (y3 - y1) * py) / (temp);
        if(u>1){
            u=1;
        }
        else if(u<0){
            u=0;
        }
        float x = x1 + u * px;
        float y = y1 + u * py;

        float dx = x - x3;
        float dy = y - y3;
        double dist = Math.sqrt(dx*dx + dy*dy);
        return dist;

    }

It is basically a comment. As we know, a number of people working on the same project must have knowledge about the code changes. We are making some notes in the program about the parameters.

What you are looking for is a query with WITH clause, if your dbms supports it. Then

WITH NewScores AS (
    SELECT * 
    FROM Score  
    WHERE InsertedDate >= DATEADD(mm, -3, GETDATE())
)
SELECT 
<and the rest of your query>
;

Note that there is no ; in the first half. HTH.

Here is another method:

• It uses the secure random number generator instead of rand()
• Can be used in URLs and file names
• Contains uppercase, lowercase characters and numbers
• Has an option not to include ambiguous characters I0l01

Needs require "securerandom"

def secure_random_string(length = 32, non_ambiguous = false)
  characters = ('a'..'z').to_a + ('A'..'Z').to_a + ('0'..'9').to_a

  %w{I O l 0 1}.each{ |ambiguous_character| 
    characters.delete ambiguous_character 
  } if non_ambiguous

  (0...length).map{
    characters[ActiveSupport::SecureRandom.random_number(characters.size)]
  }.join
end

'.*$

Starting with a single quote ('), match any character (.) zero or more times (*) until the end of the line ($).

Try this version which does not require order to be the same but does support having multiple of the same value. They match only if each has the same quantity of any value.

public boolean arraysMatch(List<String> elements1, List<String> elements2) {
    // Optional quick test since size must match
    if (elements1.size() != elements2.size()) {
        return false;
    }
    List<String> work = newArrayList(elements2);
    for (String element : elements1) {
        if (!work.remove(element)) {
            return false;
        }
    }
    return work.isEmpty();
}

@echo off

set workdir={your working dir. for example - C:\work } set iplist=%workdir%\IP-list.txt

setlocal enabledelayedexpansion
set OUTPUT_FILE=%workdir%\result.csv

>nul copy nul %OUTPUT_FILE%
echo HOSTNAME,LONGNAME,IPADDRESS,STATE >%OUTPUT_FILE%
for /f %%i in (%iplist%) do (
    set SERVER_ADDRESS_I=UNRESOLVED
    set SERVER_ADDRESS_L=UNRESOLVED
    for /f "tokens=1,2,3" %%x in ('ping -a -n 1 %%i ^&^& echo SERVER_IS_UP') do (
    if %%x==Pinging set SERVER_ADDRESS_L=%%y
    if %%x==Pinging set SERVER_ADDRESS_I=%%z
        if %%x==SERVER_IS_UP (set SERVER_STATE=UP) else (set SERVER_STATE=DOWN)
    )
    echo %%i [!SERVER_ADDRESS_L::=!] !SERVER_ADDRESS_I::=! is !SERVER_STATE!
    echo %%i,!SERVER_ADDRESS_L::=!,!SERVER_ADDRESS_I::=!,!SERVER_STATE! >>%OUTPUT_FILE%
)

To get floating point result simply use:

round(x-0.5)

It works for negative numbers as well.

in objective -c is u want to display float value in 2 decimal number then pass argument indicating how many decimal points u want to display e.g 0.02f will print 25.00 0.002f will print 25.000

Your curl command is entirely wrong. You should be using the following

curl -H 'Authorization: token <MYTOKEN>' ...

That aside, that doesn't authorize your computer to clone the repository if in fact it is private. (Taking a look, however, indicates that it is not.) What you would normally do is the following:

git clone https://scuzzlebuzzle:<MYTOKEN>@github.com/scuzzlebuzzle/ol3-1.git --branch=gh-pages gh-pages

That will add your credentials to the remote created when cloning the repository. Unfortunately, however, you have no control over how Travis clones your repository, so you have to edit the remote like so.

# After cloning
cd gh-pages
git remote set-url origin https://scuzzlebuzzle:<MYTOKEN>@github.com/scuzzlebuzzle/ol3-1.git

That will fix your project to use a remote with credentials built in.

Warning: Tokens have read/write access and should be treated like passwords. If you enter your token into the clone URL when cloning or adding a remote, Git writes it to your .git/config file in plain text, which is a security risk.

Pretty late, but you can also do this by annotating a @BeforeStep method:

@BeforeStep
    public void beforeStep(final StepExecution stepExecution) {
        JobParameters parameters = stepExecution.getJobExecution().getJobParameters();
        //use your parameters
}

How about creating an ArrayList of a set amount of Integers?

The below method returns an ArrayList of a set amount of Integers.

public static ArrayList<Integer> createRandomList(int sizeParameter)
{
    // An ArrayList that method returns
    ArrayList<Integer> setIntegerList = new ArrayList<Integer>(sizeParameter);
    // Random Object helper
    Random randomHelper = new Random();
    
    for (int x = 0; x < sizeParameter; x++)
    {
        setIntegerList.add(randomHelper.nextInt());
    }   // End of the for loop
    
    return setIntegerList;
}

contentType: 'application/x-www-form-urlencoded'

using (var conn = new SqlConnection(SomeConnectionString))
using (var cmd = conn.CreateCommand())
{
    conn.Open();
    cmd.CommandText = "SELECT * FROM learer WHERE id = @id";
    cmd.Parameters.AddWithValue("@id", index);
    using (var reader = cmd.ExecuteReader())
    {
        if (reader.Read())
        {
            learerLabel.Text = reader.GetString(reader.GetOrdinal("somecolumn"))
        }
    }
}

I implemented Joseph Johnson solution and it worked well, I noticed after using this solution sometimes the drawer on the application will not close properly. I added a functionality to remove the listener removeOnGlobalLayoutListener when the user closes the fragment where are edittexts located.

    //when the application uses full screen theme and the keyboard is shown the content not scrollable! 
//with this util it will be scrollable once again
//http://stackoverflow.com/questions/7417123/android-how-to-adjust-layout-in-full-screen-mode-when-softkeyboard-is-visible
public class AndroidBug5497Workaround {


    private static AndroidBug5497Workaround mInstance = null;
    private View mChildOfContent;
    private int usableHeightPrevious;
    private FrameLayout.LayoutParams frameLayoutParams;
    private ViewTreeObserver.OnGlobalLayoutListener _globalListener;

    // For more information, see https://code.google.com/p/android/issues/detail?id=5497
    // To use this class, simply invoke assistActivity() on an Activity that already has its content view set.

    public static AndroidBug5497Workaround getInstance (Activity activity) {
        if(mInstance==null)
        {
            synchronized (AndroidBug5497Workaround.class)
            {
                mInstance = new AndroidBug5497Workaround(activity);
            }
        }
        return mInstance;
    }

    private AndroidBug5497Workaround(Activity activity) {
        FrameLayout content = (FrameLayout) activity.findViewById(android.R.id.content);
        mChildOfContent = content.getChildAt(0);
        frameLayoutParams = (FrameLayout.LayoutParams) mChildOfContent.getLayoutParams();

        _globalListener = new ViewTreeObserver.OnGlobalLayoutListener()
        {

            @Override
            public void onGlobalLayout()
            {
                 possiblyResizeChildOfContent();
            }
        };
    }

    public void setListener()
    {
         mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener(_globalListener);
    }

    public void removeListener()
    {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
            mChildOfContent.getViewTreeObserver().removeOnGlobalLayoutListener(_globalListener);
        } else {
            mChildOfContent.getViewTreeObserver().removeGlobalOnLayoutListener(_globalListener);
        }
    }

    private void possiblyResizeChildOfContent() {
        int usableHeightNow = computeUsableHeight();
        if (usableHeightNow != usableHeightPrevious) {
            int usableHeightSansKeyboard = mChildOfContent.getRootView().getHeight();
            int heightDifference = usableHeightSansKeyboard - usableHeightNow;
            if (heightDifference > (usableHeightSansKeyboard/4)) {
                // keyboard probably just became visible
                frameLayoutParams.height = usableHeightSansKeyboard - heightDifference;
            } else {
                // keyboard probably just became hidden
                frameLayoutParams.height = usableHeightSansKeyboard;
            }
            mChildOfContent.requestLayout();
            usableHeightPrevious = usableHeightNow;
        }
    }

    private int computeUsableHeight() {
        Rect r = new Rect();
        mChildOfContent.getWindowVisibleDisplayFrame(r);
        return (r.bottom - r.top);
    } 
}

uses the class where is my edittexts located

@Override
public void onStart()
{
    super.onStart();
    AndroidBug5497Workaround.getInstance(getActivity()).setListener();
}

@Override
public void onStop()
{
    super.onStop();
    AndroidBug5497Workaround.getInstance(getActivity()).removeListener();
}

The data URI format is:

data:<headers>;<encoding>,<data>

So, you need only append your data to the "data:image/jpeg;," string:

var your_binary_data = document.body.innerText.replace(/(..)/gim,'%$1'); // parse text data to URI format

window.open('data:image/jpeg;,'+your_binary_data);

var link = $(element);
var offset = link.offset();

var top = offset.top;
var left = offset.left;

var bottom = top + link.outerHeight();
var right = left + link.outerWidth();

select datename(DAY,GETDATE()) +'-'+ datename(MONTH,GETDATE()) +'- '+ 
       datename(YEAR,GETDATE()) as 'yourcolumnname'

I did a little experiment to see which of these methods

• string.startswith('hello')
• string.rfind('hello') == 0
• string.rpartition('hello')[0] == ''
• string.rindex('hello') == 0

are most efficient to return whether a certain string begins with another string.

Here is the result of one of the many test runs I've made, where each list is ordered to show the least time it took (in seconds) to parse 5 million of each of the above expressions during each iteration of the while loop I used:

['startswith: 1.37', 'rpartition: 1.38', 'rfind: 1.62', 'rindex: 1.62']
['startswith: 1.28', 'rpartition: 1.44', 'rindex: 1.67', 'rfind: 1.68']
['startswith: 1.29', 'rpartition: 1.42', 'rindex: 1.63', 'rfind: 1.64']
['startswith: 1.28', 'rpartition: 1.43', 'rindex: 1.61', 'rfind: 1.62']
['rpartition: 1.48', 'startswith: 1.48', 'rfind: 1.62', 'rindex: 1.67']
['startswith: 1.34', 'rpartition: 1.43', 'rfind: 1.64', 'rindex: 1.64']
['startswith: 1.36', 'rpartition: 1.44', 'rindex: 1.61', 'rfind: 1.63']
['startswith: 1.29', 'rpartition: 1.37', 'rindex: 1.64', 'rfind: 1.67']
['startswith: 1.34', 'rpartition: 1.44', 'rfind: 1.66', 'rindex: 1.68']
['startswith: 1.44', 'rpartition: 1.41', 'rindex: 1.61', 'rfind: 2.24']
['startswith: 1.34', 'rpartition: 1.45', 'rindex: 1.62', 'rfind: 1.67']
['startswith: 1.34', 'rpartition: 1.38', 'rindex: 1.67', 'rfind: 1.74']
['rpartition: 1.37', 'startswith: 1.38', 'rfind: 1.61', 'rindex: 1.64']
['startswith: 1.32', 'rpartition: 1.39', 'rfind: 1.64', 'rindex: 1.61']
['rpartition: 1.35', 'startswith: 1.36', 'rfind: 1.63', 'rindex: 1.67']
['startswith: 1.29', 'rpartition: 1.36', 'rfind: 1.65', 'rindex: 1.84']
['startswith: 1.41', 'rpartition: 1.44', 'rfind: 1.63', 'rindex: 1.71']
['startswith: 1.34', 'rpartition: 1.46', 'rindex: 1.66', 'rfind: 1.74']
['startswith: 1.32', 'rpartition: 1.46', 'rfind: 1.64', 'rindex: 1.74']
['startswith: 1.38', 'rpartition: 1.48', 'rfind: 1.68', 'rindex: 1.68']
['startswith: 1.35', 'rpartition: 1.42', 'rfind: 1.63', 'rindex: 1.68']
['startswith: 1.32', 'rpartition: 1.46', 'rfind: 1.65', 'rindex: 1.75']
['startswith: 1.37', 'rpartition: 1.46', 'rfind: 1.74', 'rindex: 1.75']
['startswith: 1.31', 'rpartition: 1.48', 'rfind: 1.67', 'rindex: 1.74']
['startswith: 1.44', 'rpartition: 1.46', 'rindex: 1.69', 'rfind: 1.74']
['startswith: 1.44', 'rpartition: 1.42', 'rfind: 1.65', 'rindex: 1.65']
['startswith: 1.36', 'rpartition: 1.44', 'rfind: 1.64', 'rindex: 1.74']
['startswith: 1.34', 'rpartition: 1.46', 'rfind: 1.61', 'rindex: 1.74']
['startswith: 1.35', 'rpartition: 1.56', 'rfind: 1.68', 'rindex: 1.69']
['startswith: 1.32', 'rpartition: 1.48', 'rindex: 1.64', 'rfind: 1.65']
['startswith: 1.28', 'rpartition: 1.43', 'rfind: 1.59', 'rindex: 1.66']

I believe that it is pretty obvious from the start that the startswith method would come out the most efficient, as returning whether a string begins with the specified string is its main purpose.

What surprises me is that the seemingly impractical string.rpartition('hello')[0] == '' method always finds a way to be listed first, before the string.startswith('hello') method, every now and then. The results show that using str.partition to determine if a string starts with another string is more efficient then using both rfind and rindex.

Another thing I've noticed is that string.rindex('hello') == 0 and string.rindex('hello') == 0 have a good battle going on, each rising from fourth to third place, and dropping from third to fourth place, which makes sense, as their main purposes are the same.

Here is the code:

from time import perf_counter

string = 'hello world'
places = dict()

while True:
    start = perf_counter()
    for _ in range(5000000):
        string.startswith('hello')
    end = perf_counter()
    places['startswith'] = round(end - start, 2)

    start = perf_counter()
    for _ in range(5000000):
        string.rfind('hello') == 0
    end = perf_counter()
    places['rfind'] = round(end - start, 2)

    start = perf_counter()
    for _ in range(5000000):
        string.rpartition('hello')[0] == ''
    end = perf_counter()
    places['rpartition'] = round(end - start, 2)

    start = perf_counter()
    for _ in range(5000000):
        string.rindex('hello') == 0
    end = perf_counter()
    places['rindex'] = round(end - start, 2)
    
    print([f'{b}: {str(a).ljust(4, "4")}' for a, b in sorted(i[::-1] for i in places.items())])

Run this command:

rvm get stable --auto-dotfiles

and make sure to read all the output. RVM will tell you if something is wrong, which in your case might be because GEM_HOME is set to something different then PATH.

Interestingly, none of the answers on this page mention the two edge cases, hope no one minds if I add them:

Edge case #1: concurrent access to a Dictionary

Generic dictionaries in .NET are not thread-safe and they sometimes might throw a NullReference or even (more frequent) a KeyNotFoundException when you try to access a key from two concurrent threads. The exception is quite misleading in this case.

Edge case #2: unsafe code

If a NullReferenceException is thrown by unsafe code, you might look at your pointer variables, and check them for IntPtr.Zero or something. Which is the same thing ("null pointer exception"), but in unsafe code, variables are often cast to value-types/arrays, etc., and you bang your head against the wall, wondering how a value-type can throw this exception.

(Another reason for non-using unsafe code unless you need it, by the way)

Edge case #3: Visual Studio multi monitor setup with secondary monitor(s) that has different DPI setting than the primary monitor

This edge case is software-specific and pertains to Visual Studio 2019 IDE (and possibly earlier versions).

Method to reproduce the problem: drag any component from the Toolbox to a Windows form on a non-primary monitor with different DPI setting than the primary monitor, and you get a pop-up with “Object reference not set to an instance of an object.” According to this thread this issue has been known for quite some time and at the time of writing it still hasn't been fixed.

Why not fix a <video> and use z-index:-1 to put it behind all other elements?

html, body { width:100%; height:100%; margin:0; padding:0; }

<div style="position: fixed; top: 0; width: 100%; height: 100%; z-index: -1;">
    <video id="video" style="width:100%; height:100%">
        ....
    </video>
</div>
<div class='content'>
    ....

Demo

If you want it within a container you have to add a container element and a little more CSS

/* HTML */
<div class='vidContain'>
    <div class='vid'>
        <video> ... </video>
    </div>
    <div class='content'> ... The rest of your content ... </div>
</div>

/* CSS */
.vidContain {
    width:300px; height:200px;
    position:relative;
    display:inline-block;
    margin:10px;
}
.vid {
    position: absolute; 
    top: 0; left:0;
    width: 100%; height: 100%; 
    z-index: -1;
}    
.content {
    position:absolute;
    top:0; left:0;
    background: black;
    color:white;
}

Demo

Do keep in mind that the file.getContentType could also output application/octet-stream instead of the required application/vnd.openxmlformats-officedocument.spreadsheetml.sheet when you try to upload the file that is already open.

An example Extension class to simplify this: -

internal static class String
{
    public static string TrimEndsCharacter(this string target, char character) => target?.TrimLeadingCharacter(character).TrimTrailingCharacter(character);
    public static string TrimLeadingCharacter(this string target, char character) => Match(target?.Substring(0, 1), character) ? target.Remove(0,1) : target;
    public static string TrimTrailingCharacter(this string target, char character) => Match(target?.Substring(target.Length - 1, 1), character) ? target.Substring(0, target.Length - 1) : target;

    private static bool Match(string value, char character) => !string.IsNullOrEmpty(value) && value[0] == character;
}

Usage

"!Something!".TrimLeadingCharacter('X'); // Result '!Something!' (No Change)
"!Something!".TrimTrailingCharacter('S'); // Result '!Something!' (No Change)
"!Something!".TrimEndsCharacter('g'); // Result '!Something!' (No Change)

"!Something!".TrimLeadingCharacter('!'); // Result 'Something!' (1st Character removed)
"!Something!".TrimTrailingCharacter('!'); // Result '!Something' (Last Character removed)
"!Something!".TrimEndsCharacter('!'); // Result 'Something'  (End Characters removed)

"!!Something!!".TrimLeadingCharacter('!'); // Result '!Something!!' (Only 1st instance removed)
"!!Something!!".TrimTrailingCharacter('!'); // Result '!!Something!' (Only Last instance removed)
"!!Something!!".TrimEndsCharacter('!'); // Result '!Something!'  (Only End instances removed)