Tag: hold

93 Replacement inside held expression 2011-07-09T06:46:19.533

67 Injecting a sequence of expressions into a held expression 2012-02-17T18:35:58.163

49 What's the difference between Inactive and HoldForm? 2014-07-11T14:00:22.033

32 What are the cool kids talking about when they use ##&[]? 2015-04-02T20:06:51.930

29 Why is Unevaluated[#]& different from Unevaluated? 2018-01-08T19:18:19.867

28 Defer, Hold, Unevaluated, Inactivate -- which one when? 2015-11-07T17:04:35.967

25 How to pass a symbol name to a function with any of the Hold attributes? 2012-03-06T21:39:16.347

22 How to inject an evaluated expression into a held expression? 2012-03-07T01:46:09.400

22 Can't inject EncryptedObject 2015-04-24T09:39:50.390

22 Pattern does not match with Orderless head 2015-09-11T07:28:23.203

21 How to uncompress strings safely (without any evaluation)? 2017-04-21T17:28:48.503

20 When should I, and when should I not, set the HoldAll attribute on a function I define? 2012-04-11T04:51:12.383

19 Prevent graphics from rendering inside a held expression 2013-09-14T00:04:14.197

18 Get the name of a symbol passed to a function 2012-12-04T12:58:38.760

18 Why are the attributes of Plot changing? 2013-01-04T08:07:23.933

17 Replacing parts of a held expression with held parts of another expression 2014-02-28T00:52:58.820

17 What is the potential usage of ReplaceAllUnheld in Developer Utilities Package? 2016-12-02T07:51:20.707

16 Why is the first argument of the SetDelayed evaluated? 2015-09-26T14:54:50.473

14 How to properly inject iterators into table? 2015-03-10T06:52:27.557

14 Matching HoldPattern expressions 2016-04-17T18:54:52.833

14 Evaluated vs. unevaluated Association 2019-08-25T02:48:59.147

13 Displaying a series obtained by evaluating a Taylor series 2012-06-03T06:41:04.550

13 Unexpected behavior of Unevaluated 2013-05-15T21:22:51.267

13 Report: IgnoringInactive: a bug? 2014-07-21T13:57:52.687

13 How to see a code preview (in Experimental`Explore[] or related GUI) 2015-12-28T16:05:57.793

12 Easy printing of executable code 2017-10-30T14:32:21.493

11 How can you stop ordering of InputField entries? 2012-02-18T01:31:19.700

11 Creating a custom context with a Hold construct 2013-11-23T20:00:43.793

11 Why does Plot[Hold[x], {x,0,1}] work? 2014-03-03T23:23:27.350

11 Held keys in associations 2014-09-18T08:14:15.153

11 KeyValuePattern in matching and replacement in nested associations 2017-06-30T06:30:56.660

11 TextString evaluation leak 2017-11-14T15:42:46.467

11 Why does Unevaluated applied (@@) to a held expression not work? 2020-02-01T23:40:21.923

10 HoldForm does not Hold Form for fractions sometimes 2014-12-25T10:02:20.193

10 Why there is only `HoldFirst` but no `HoldSecond`, `HoldThird`, ...`HoldN`? 2015-11-02T15:44:10.987

10 Is there a way to TagSet a HoldAllComplete function? 2016-03-10T14:37:56.180

10 Problems with Dataset's querying on a fresh Kernel 2016-09-10T08:22:51.077

10 How to get a unevaluted expression from a compressed string? 2017-04-10T16:48:59.310

10 HoldPattern vs Unevaluated 2017-08-16T12:59:52.213

10 Perform localized, evaluation-leak free replacements 2019-01-05T16:56:40.727

10 How to explain the behaviour of TreeForm? 2019-04-30T13:46:01.950

9 FullSimplify Produces Result that Includes Hold 2015-04-09T02:14:21.437

9 Passing an unevaluated part of an association to a function 2015-07-16T22:57:43.977

9 Why one needs two Unevaluated to show 1+1 correctly in TreeForm? 2016-03-19T12:02:55.990

9 Expand series unevaluated 2016-03-20T01:40:20.840

9 How do I insert OwnValues inside a held expression without evaluating it? 2016-06-09T12:02:12.540

9 How do I restore HoldAll, HoldFirst, HoldRest attributes of Inactivated functions 2016-06-09T15:15:41.383

9 Confusion about HoldFirst attribute of Set 2017-06-23T17:05:29.840

9 HoldForm: Display exactly as entered? 2018-11-15T11:02:24.157

9 Why Optional in Set is not held by the HoldFirst attribute? 2020-02-29T13:45:16.417

8 Hold expression with RandomInteger 2013-09-05T17:33:01.813

8 How to join held Lists? 2013-09-11T15:08:52.030

8 How to Map a function with HoldAll attribute 2015-03-05T19:19:06.787

8 How to map Unevaluated over a list 2015-05-22T16:20:53.530

8 How to inject unevaluated list of Unique into a RuleDelayed? 2016-01-12T13:56:37.913

8 Why Unevaluated doesn't work on unheld side of Rule/RuleDelayed? 2016-03-19T15:13:54.890

8 Pure functions are not functions? 2016-08-01T18:31:15.793

8 Help me understand this behaviour of the standard evaluation procedure with `Unevaluated` 2016-08-18T17:41:50.343

8 Question on Inactivate with Hold and HoldForm 2016-12-28T20:30:39.467

8 Why can't I use Inactive[D] in NDSolve? 2020-03-27T04:56:18.147

7 HoldForm[Operator ##] on some list 2013-09-06T19:05:00.807

7 Converting StringJoin to StringForm inside Hold 2014-01-17T12:57:04.187

7 Pattern matching an expression involving Times 2015-09-11T02:46:08.187

7 Evaluation inside Inactivate 2016-01-09T23:07:39.023

7 Changes in TemplateApply/StringTemplate in V11 2017-01-17T07:42:48.727

7 How to convert input expression to FullForm String 2017-07-27T15:05:13.963

7 What's with the weird HoldRest Attribute of ParallelMap? 2017-08-08T10:50:15.630

7 Create local alias for variable 2018-05-09T00:42:25.253

7 What is the the proper way to define a function from an expression? 2018-12-04T11:02:37.403

6 Is there a more Mathematica-y way to label these plots? 2013-11-06T19:27:02.453

6 Replace symbols with values without evaluation 2014-01-10T12:53:38.703

6 Concatenating strings, unevaluated expressions and evaluated expressions/values 2014-09-12T10:09:19.693

6 How to force evaluation of an expression with Part left unnevaluated? 2015-05-22T23:07:26.530

6 Calculating N-th step of recurrent sequence 2015-12-20T15:06:38.103

6 Puzzled regarding avoiding evaluations and using results of computations as functions 2017-02-16T13:37:34.850

6 Annotation/Tooltip throws error on invalid Slot /Hide Slot from function 2017-09-09T22:42:46.123

6 How can I check if a function remains unevaluated? 2018-02-15T04:00:46.733

6 How do I make $0 \times (\mathsf{anything})=0$? 2018-05-17T07:17:29.877

5 Applying a function with the HoldAll attribute inside NestList 2013-05-17T16:22:29.423

5 Why is NHoldFirst not propagated to symbolic derivatives? 2013-06-24T19:46:47.233

5 Why do manipulated variables display badly when wrapped by HoldForm in a plot label? 2015-01-14T15:20:26.063

5 MatchQ failing in some cases with Hold 2016-04-12T00:48:44.067

5 Same input,different result? 2016-05-09T12:02:06.790

5 How can I define MakeBoxes for Inactive forms of user-defined heads? 2016-05-21T08:06:13.570

5 How to hold evaluation of a value that is passed to a function 2016-09-20T20:06:50.513

5 Can I release a pattern without releasing the whole held expression? 2016-10-16T20:12:18.973

5 Expanding a sum without evaluating it 2018-04-20T18:42:17.563

5 Sign of conservative convection coefficient in a formal (Inactive) PDE 2019-04-01T07:53:27.387

5 Obtaining head and parts without evaluation 2019-07-18T20:20:56.817

5 Hold[Expression] (or similar) in InputField that truly holds the input unmodified 2019-07-25T19:52:13.840

5 How to Force Evaluation of Derivative in a Pure Function Definition 2020-02-06T08:10:59.780

5 Generate pattern held by HoldPattern 2020-03-15T20:34:08.483

5 head of a sequence 2020-05-18T21:23:21.160

5 HoldForm does not prevent evaluation 2020-08-22T17:26:14.230

4 Efficiently evaluating a held expression directly from a list 2012-03-09T04:26:50.990

4 Confusing ReplaceRepeated & Hold 2012-10-04T14:45:39.397

4 Convert a symbol name to a Symbol and pass it as an argument to a HoldAll function unevaluated 2013-06-16T01:14:31.497

4 Confused with HoldForm in Postfix notation 2014-01-16T07:28:16.577

4 Stopping a head from evaluating more than once 2014-03-01T14:50:01.280