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Search found 1050 results on 42 pages for 'evaluate'.

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• MYSQL if statement question...

  - by Dennis_M

  Is there any way to get the if statement to evaluate a query? SELECT if(50,'EQ_Type','*') FROM EQUIPMENT; Resulting in: +-----------------------+ | IF(50,'EQ_Type','*') | +-----------------------+ | EQ_Type | | EQ_Type | | EQ_Type | | EQ_Type | | EQ_Type | | EQ_Type | | EQ_Type | | EQ_Type | | EQ_Type | +-----------------------+ 9 rows in set (0.00 sec) I would like the above statement to be equivalent to the following: SELECT 'EQ_Type' FROM EQUIPMENT; And produce: +--------------+ | EQ_Type | +--------------+ | ENGINE | | ENGINE | | ENGINE | | TRAILER | | TRAILER | | TRAILER | | WATER TENDER | | WATER TENDER | | WATER TENDER | +--------------+ Thanks for any help

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• xpath - limit search to node not working?

  - by Mr W

  What am I doing wrong here? I am trying to limit my xpath search to a specific row in my table but my query always returns the content of the span in the first row: var query = "//span[contains(@id, 'timer')]"; var root = document.getElementById('movements').rows[1]; document.evaluate(query, root, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue.textContent Please help!

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• Multiple conditions on select query

  - by stats101

  I have a select statement and I wish to calculate the cubic volume based on other values within the table. However I want to check that neither pr.Length_mm or pr.Width_mm or pr.Height_mm are NULL prior. I've looked at CASE statements, however it only seems to evaluate one column at a time. SELECT sa.OrderName, sa.OrderType, pr.Volume_UOM ,pr.Length_mm*pr.Width_mm*pr.Height_mm AS Volume_Cubic ,pr.Length_mm*pr.Width_mm AS Volume_Floor ,pr.Length_mm ,pr.Height_mm ,pr.Width_mm FROM CostToServe_MCB.staging.Sale sa LEFT JOIN staging.Product pr ON sa.ID = pr.ID

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• What does the C standard say about pointers to structs and their first member?

  - by James Morris

  Consider the following two struct: struct a { int a; }; struct b { struct a a_struct; int b; }; the following instantiation of struct b: struct b b_struct; and this condition: if (&b_struct == (struct b*)&b_struct.a_struct) printf("Yes\n"); Does the C standard mandate this to always evaluate true?

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• SSIS Null Value Questions

  - by Saobi

  I have a table with 5 string columns, all can be NULLs. After I read the data from this table, I want to convert any null values into empty strings. The reason is that I need to compare these columns with columns in another table of the same schema (using conditional split), and null values would cause the comparison to evaluate to NULL. Is there any functionality in SSIS that allows me to convert NULL's to empty strings, or just not having to deal with NULL's at all?

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• PHP How do I properly check if an array is multi-dimensional - strange array behavior

  - by niggles

  If I have this array: $foo[0] = 'bar'; $foo[1] = 'bar bar'; echo $foo[0][1]; // result a // i.e the second letter of 'bar' I want to check that $foo[0][1] is not set i.e if I had: $foo[0][1] = 'bar'; it would evaluate to true, but in my original example of $foo[0] = 'bar' I would expect that: isset($foo[0][1]) would return false; What's the correct way to test that please.

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• javascript syntax

  - by Michael

  var ret = [] ,xresult = document.evaluate(exp, rootEl, null, XPathResult.UNORDERED_NODE_ITERATOR_TYPE, null) ,result = xresult.iterateNext(); while (result) { ret[ret.length]= result; result = xresult.iterateNext(); } can anyone explain me what is the ret = [],..,... syntax? Initializing array?

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• Is there an evalScripts: false (from mootools) equivalent in jQuery?

  - by lock

  I read the specs on http://api.jquery.com/jQuery.ajax/ and found that depending on the dataType, scripts are automatically evaluated for every response. Is it then possible to force jQuery not to evaluate the script parts of the response?

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• Why is the order of evaluation for function parameters undefined in c++?

  - by kunj2aan

  The standard doesn't specify the order of evaluation of arguments with this line: The order of evaluation of arguments is unspecified. What does Better code can be generated in the absence of restrictions on expression evaluation order imply? What is the drawback in asking all the compilers to evaluate the function arguments Left to Right for example? What kinds of optimizations do compilers perform because of this undefined spec?

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• Initializing a C++ vector to random values... fast

  - by Flamewires

  Hey, id like to make this as fast as possible because it gets called A LOT in a program i'm writing, so is there any faster way to initialize a C++ vector to random values than: double range;//set to the range of a particular function i want to evaluate. std::vector<double> x(30, 0.0); for (int i=0;i<x.size();i++) { x.at(i) = (rand()/(double)RAND_MAX)*range; } EDIT:Fixed x's initializer.

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• What are the alternatives to DataGridView?

  - by Simon

  We're looking to replace DataGridView in our Winforms app. What are the alternatives - commercial or otherwise - that we ought to evaluate?

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• Basic LaTeX questions

  - by bpc89

  Two (hopefully quick) questions about LaTeX: How do you number select functions? I'm working in a documentclass{article}, if that matters. I want to have certain functions numbered such as function1 function2 (1) function3 function4 (2) How do you make a sign to evaluate an integral? I know how to do brackets, but is it possible to only make one straight light to the right of the function with the bounds of integration? I can't figure out how to do that.

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• what is this facebook code?

  - by Marc

  Inspecting what facebook is doing in my navigator, I see this code: for (;;);{"t":"refresh"} If you try to evaluate it, you can figure what happens (infinite loop). Do you Know what it is?

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• python: equivalent to Javascript "||" to override non-truthful value

  - by Jason S

  In Javascript I can do this: function A(x) { return x || 3; } This returns 3 if x is a "non-truthful" value like 0, null, false, and it returns x otherwise. This is useful for empty arguments, e.g. I can do A() and it will evaluate as 3. Does Python have an equivalent? I guess I could make one out of the ternary operator a if b else c but was wondering what people use for this.

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• How can I add imports to an "eval"ed piece of clojure code?

  - by Zubair

  I would like to evaluate some clojure code entered by users interactively, and I would like to "use" certain namespaces and "import" certain Java classes as well. I end up running the code using: (defn execute-command [string-command] let [ code-with-context (add-code-context string-command) result (eval(read-string code-with-context)) ] result ) My question is how can I program "add-code-context" to add the required context to the code in "string-command"?

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• How to benchmark functions in clojure

  - by Peter Tillemans

  I know I can get the time take to evaluate a function can be printed out on the screen/stdout using the time function/macro. The time macro returns the value of the evaluated function, which makes it great to use it inline. However I want to automatically measure the runtime under specific circumstances. is there a function which returns the elapsed time in some library to hep with this benchmarking?

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• Log files legal aspect?

  - by relwarc

  I like data. That is why I add a standalone PHP script which logs all relevant HTTP variables like: Date of visit IP User-agent Request URI Referer Am I allowed to store all this in non-public text files? Am I allowed to evaluate the data? What am I allowed to do with the log files? Do I have to delete them after some time?

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• Switch Statement Case Evaluation?

  - by TheDarkIn1978

  i would like to have cases that evaluate the expression in my switch statement. is this not possible? switch (zSpeed) { case (zSpeed > zMax): this.zSpeed = zMax; break; case (zSpeed < 0): this.zSpeed = 0; break; default: this.zSpeed = zSpeed; }

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• R: how to construct a mathematical expression from a character object?

  - by Rob Hyndman

  In R, I'm wanting to create a graph with x axis label expression(varname), where varname is a character object. For example: varname <- "beta[1]" hist(rnorm(20),xlab=expression(varname)) But that gives me a graph with xlab="varname" rather than xlab=expression(beta[1]). How to I convince expression() to evaluate the variable?

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• Is there a "standard" way to implement Software Activation for .NET?

  - by dermdaly

  I've been looking at software activation systems for .NET and frankly found the websites out there underwhelming. I'm wondering if there's a "standard" way to do it in .NET? If not, does anyone with experience of them have a recommendation? I understand the arguments for and against activation systems, but still need to evaluate. Thanks.

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• How to make my laptop dual boot(Windows Server 2008 and WIndows 7)?

  - by Dinesh

  I have Windows Server 2008 R2 Enterprise(Licensed Copy) installed in my Laptop. I have installed this to evaluate Latest 64 bit Products of Microsoft like Share point 2010 etc. Now i want to install Windows 7 Ultimate(Original) without removing the Server OS. Basically, i want to make my laptop Dual Boot. I tried To install Windows 7, but it not showing any options for making dual boot. Can anybody,please suggest the solution. I need to install immediately.

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• Converting MS Word 2002 Templates from PC to Mac

  - by Spacehamster

  I've been asked to convert several hundred MS Word 2002 Templates (on the PC) to work on the Macintosh. I have to evaluate whether the Word Templates can be run in iWork Pages and Microsoft Word for the Mac. The biggest issues that I've found thus far are that I'm unable to convert the following - Macros WordBasic code Visual Basic Has anyone here ever done this before and can provide any suggestions?

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• Iterating through struct fieldnames in MATLAB.

  - by Noio

  My question is easily summarized as: "Why does the following not work?" teststruct = struct('a',3,'b',5,'c',9) fields = fieldnames(teststruct) for i=1:numel(fns) fns(i) teststruct.(fns(i)) end output: ans = 'a' ??? Argument to dynamic structure reference must evaluate to a valid field name. Especially since teststruct.('a') does work. And fns(i) prints out ans = 'a'. I can't get my head around it.

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• Parsing result of Diff in Shell Script

  - by Saobi

  I want to compare two files and see if they are the same or not in my shell script, my way is: diff_output=`diff ${dest_file} ${source_file}` if [ some_other_condition -o ${diff_output} -o some_other_condition2 ] then .... fi Basically, if they are the same ${diff_output} should contain nothing and the above test would evaluate to true. But when I run my script, it says [: too many arguments On the if [....] line. Any ideas?

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• How well do you need to know HTML before delving into CSS?

  - by Shailesh Tainwala

  Is knowledge of HTML beyond the basics a prerequisite for learning CSS? I am making a learning plan so this will help me evaluate the time required better.

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