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Measuring text width/height without rendering

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Please check this. is a solution using canvas function get_tex_width(txt, font) { this.element = document.createElement(‘canvas’); this.context = this.element.getContext(“2d”); this.context.font = font; return this.context.measureText(txt).width; } alert(‘Calculated width ‘ + get_tex_width(“Hello World”, “30px Arial”)); alert(“Span text width “+$(“span”).width()); Demo using EDIT The solution using canvas is not the best, each browser deal different canvas size. Here is … Read more

NSTextField or NSTextView?

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Could someone explain to me what are the main differences between NSTextField and NSTextView? I know that NSTextView has more features and is usually used for longer texts, and NSTextField is usually used for one-line plain text fields, but if I understand correctly, NSTextField can be also used with attributed strings and with multiple lines… … Read more

Extracting text from PDFs in C# [closed]

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There may be some difficulty in doing this reliably. The problem is that PDF is a presentation format which attaches importance to good typography. Suppose you just wanted to output a single word: Tap. A PDF rendering engine might output this as 2 separate calls, as shown in this pseudo-code: moveto (x1, y); output (“T”) … Read more

Parsing Performance (If, TryParse, Try-Catch)

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Always use T.TryParse(string str, out T value). Throwing exceptions is expensive and should be avoided if you can handle the situation a priori. Using a try-catch block to “save” on performance (because your invalid data rate is low) is an abuse of exception handling at the expense of maintainability and good coding practices. Follow sound … Read more