Allow _.zipObject to accept an array of keys without assuming its an array of key/value pairs. [closes #397]

dist/lodash.compat.js

@@ -5317,6 +5317,9 @@
           length = keys ? keys.length : 0,
           result = {};
 
+      if (!values && length && !isArray(keys[0])) {
+        values = [];
+      }
       while (++index < length) {
         var key = keys[index];
         if (values) {

dist/lodash.compat.min.js

@@ -25,7 +25,7 @@ else qe.unindexedChars&&Et(n)&&(r=n.split(""));Ze(n,function(n,e,a){return e=o?o
 });return o}function Ft(n,t,e,r){var u=3>arguments.length;if(t=v.createCallback(t,r,4),We(n)){var o=-1,a=n.length;for(u&&(e=n[++o]);++o<a;)e=t(e,n[o],o,n)}else Ze(n,function(n,r,o){e=u?(u=false,n):t(e,n,r,o)});return e}function $t(n,t,e,r){var u=3>arguments.length;return t=v.createCallback(t,r,4),Bt(n,function(n,r,o){e=u?(u=false,n):t(e,n,r,o)}),e}function Lt(n){var t=-1,e=n?n.length:0,r=ne(typeof e=="number"?e:0);return Nt(n,function(n){var e=ct(0,++t);r[t]=r[e],r[e]=n}),r}function Tt(n,t,e){var r;if(t=v.createCallback(t,e,3),We(n)){e=-1;
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+return r}function Mt(n,t){var e=-1,r=n?n.length:0,u={};for(t||!r||We(n[0])||(t=[]);++e<r;){var o=n[e];t?u[o]=t[e]:o&&(u[o[0]]=o[1])}return u}function Ht(n,t){return 2<arguments.length?gt(n,17,s(arguments,2),null,t):gt(n,1,null,null,t)}function Ut(n,t,e){var r,u,o,a,i,l,f,c=0,p=false,s=true;if(!xt(n))throw new fe;if(t=Re(0,t)||0,true===e)var g=true,s=false;else Ct(e)&&(g=e.leading,p="maxWait"in e&&(Re(t,e.maxWait)||0),s="trailing"in e?e.trailing:s);var v=function(){var e=t-(xe()-a);0<e?l=Ee(v,e):(u&&de(u),e=f,u=l=f=h,e&&(c=xe(),o=n.apply(i,r),l||u||(r=i=null)))
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dist/lodash.js

@@ -4978,6 +4978,9 @@
           length = keys ? keys.length : 0,
           result = {};
 
+      if (!values && length && !isArray(keys[0])) {
+        values = [];
+      }
       while (++index < length) {
         var key = keys[index];
         if (values) {

dist/lodash.min.js

@@ -24,7 +24,7 @@ return n}function At(n,t,e){var r=n?n.length:0;if(t=t&&typeof e=="undefined"?t:u
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+return u}function Mt(n,t,e,r){return typeof t!="boolean"&&null!=t&&(r=e,e=typeof t!="function"&&r&&r[t]===n?null:t,t=false),null!=e&&(e=Z.createCallback(e,r,3)),pt(n,t,e)}function Ut(){for(var n=1<arguments.length?arguments:arguments[0],t=-1,e=n?$t(Ft(n,"length")):0,r=ne(0>e?0:e);++t<e;)r[t]=Ft(n,t);return r}function Vt(n,t){var e=-1,r=n?n.length:0,u={};for(t||!r||qe(n[0])||(t=[]);++e<r;){var o=n[e];t?u[o]=t[e]:o&&(u[o[0]]=o[1])}return u}function Gt(n,t){return 2<arguments.length?vt(n,17,p(arguments,2),null,t):vt(n,1,null,null,t)
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dist/lodash.underscore.js

@@ -3589,6 +3589,9 @@
         length = keys ? keys.length : 0,
         result = {};
 
+    if (!values && length && !isArray(keys[0])) {
+      values = [];
+    }
     while (++index < length) {
       var key = keys[index];
       if (values) {

dist/lodash.underscore.min.js

@@ -30,7 +30,7 @@ if(0>u(i,f)){for(var a=t;--a;)if(0>u(r[a],f))continue n;i.push(f)}}return i},u.i
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+},u.union=function(){return g(p(arguments,true,true))},u.uniq=K,u.values=N,u.where=U,u.without=function(n){return c(n,e(arguments,1))},u.wrap=function(n,r){return v(r,16,[n])},u.zip=function(){for(var n=-1,r=M($(arguments,"length")),t=Array(0>r?0:r);++n<r;)t[n]=$(arguments,n);return t},u.collect=I,u.drop=H,u.each=q,u.extend=b,u.methods=j,u.object=function(n,r){var t=-1,e=n?n.length:0,u={};for(r||!e||Cr(n[0])||(r=[]);++t<e;){var o=n[t];r?u[o]=r[t]:o&&(u[o[0]]=o[1])}return u},u.select=B,u.tail=H,u.unique=K,u.clone=function(n){return T(n)?Cr(n)?e(n):b({},n):n
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 },u.reduce=W,u.reduceRight=z,u.result=function(n,r){if(n){var t=n[r];return E(t)?n[r]():t}},u.size=function(n){var r=n?n.length:0;return typeof r=="number"?r:Ur(n).length},u.some=P,u.sortedIndex=J,u.template=function(n,r,e){var o=u,i=o.templateSettings;n=(n||"")+"",e=w({},e,i);var f=0,a="__p+='",i=e.variable;n.replace(RegExp((e.escape||ur).source+"|"+(e.interpolate||ur).source+"|"+(e.evaluate||ur).source+"|$","g"),function(r,e,u,o,i){return a+=n.slice(f,i).replace(or,t),e&&(a+="'+_.escape("+e+")+'"),o&&(a+="';"+o+";\n__p+='"),u&&(a+="'+((__t=("+u+"))==null?'':__t)+'"),f=i+r.length,r

lodash.js

@@ -5335,6 +5335,9 @@
           length = keys ? keys.length : 0,
           result = {};
 
+      if (!values && length && !isArray(keys[0])) {
+        values = [];
+      }
       while (++index < length) {
         var key = keys[index];
         if (values) {

test/test.js

@@ -7634,6 +7634,11 @@
       deepEqual(actual, object);
     });
 
+    test('should not assume `keys` is two dimensional if `values` is not provided', 1, function() {
+      var actual = _.zipObject(['barney', 'fred']);
+      deepEqual(actual, { 'barney': undefined, 'fred': undefined });
+    });
+
     test('should accept a falsey `array` argument', 1, function() {
       var expected = _.map(falsey, function() { return {}; });