Setting the AllowZeroLength Property You can use theRequiredandAllowZeroLengthproperties to differentiate between information that does not exist (stored as a zero-length string (" ") in the field) and information that may exist but is unknown (stored as aNullvalue in the field). If you set...
Remember that running an update query to delete data will change the existing values to either NULL or a zero-length string (a pair of double quotation marks with no space in between), depending on the criteria that you specify. Click the Create tab and in the Queries group, click Query ...
static string mutatedInstruction(string instruction) { for (int i = 0; i < brInstructions.Length; ++i) if (brInstructions[i] == instruction) return brComplements[i]; return null; } Like all the samples in this article I have removed most of the error-checking code to ...
Re: Can't have zero-length string in a database field? its most likely the database: for instance, the northwind database has some fields where 'allow null' is true, but 'allow zero length' is false. in other words, you can put null in the field - but not an empty string ...
When set to Yes, you must enter a value in the field, or in any controls bound to the field, and the value cannot be Null. Allow Zero Length When set to Yes, you can enter zero-length strings in a field. A zero-length string contains no characters, and you use them to in...
to mind for uniting the PathFigure and the text string. You might want to specify a particular font size for the text and display the text starting at the beginning of the path. But the text might not fit the whole path, and (worse) it might exceed the length of the path. What ...
An F3 expression inside an if attribute that equates to NULL, an empty string, a boolean FALSE, an empty array or zero, automatically invokes <false>. If your template has no <false> block, then the <true> opening and closing tags are optional:-...
(string username) { if (!IsUserAuthorized(username)) { WebOperationContext.Current.OutgoingResponse.StatusCode = HttpStatusCode.Unauthorized; return; } User user = FindUser(username); if (user == null) { WebOperationContext.Current.OutgoingResponse.SetStatusAsNotFound(); return null; } return ...
uint16featUiLabelNameIdThe 'name' table name ID that specifies a string (or strings, for multiple languages) for a user-interface label for this feature. (May be NULL.) uint16featUiTooltipTextNameIdThe 'name' table name ID that specifies a string (or strings, for multiple languages) that...
Prefer string manipulation functions from clojure.string over Java interop or rolling your own. ;; good (clojure.string/upper-case "bruce") ;; bad (.toUpperCase "bruce") Note Several new functions were added to clojure.string in Clojure 1.8 (index-of, last-index-of, starts-with?, ends-...