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If isset $_POST

...age. There, it checks if the input mail is filled. If so then do something and if it is not filled, do something else. I don't understand why it always says that it is set, even if I send an empty form. What is missing or wrong? ...
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How to get arguments with flags in Bash

... What does the --action* and --output-dir* cases do? – Lucio Jul 23 '14 at 0:22 1 ...
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Bootstrap 3 Glyphicons are not working

I downloaded bootstrap 3.0 and can't get the glyphicons to work. I get some kind of "E003" error. Any ideas why this is happening? I tried both locally and online and I still get the same problem. ...
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How do I Convert DateTime.now to UTC in Ruby?

...ateTime.now.utc Oops! That seems to work in Rails, but not vanilla Ruby (and of course that is what the question is asking) d = Time.now.utc Does work however. Is there any reason you need to use DateTime and not Time? Time should include everything you need: irb(main):016:0> Time.now =&gt...
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Passing HTML to template using Flask/Jinja2

I'm building an admin for Flask and SQLAlchemy, and I want to pass the HTML for the different inputs to my view using render_template . The templating framework seems to escape the html automatically, so all ...
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How to detect the screen resolution with JavaScript?

...with the device pixel ratio: window.screen.width * window.devicePixelRatio and window.screen.height * window.devicePixelRatio. This will also work on desktops, which will have a ratio of 1. And from Ben in another answer: In vanilla JavaScript, this will give you the AVAILABLE width/height: window...
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How do you determine what SQL Tables have an identity column programmatically

... to create a list of columns in SQL Server 2005 that have identity columns and their corresponding table in T-SQL. 13 Answe...
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Efficient string concatenation in C++

I heard a few people expressing worries about "+" operator in std::string and various workarounds to speed up concatenation. Are any of these really necessary? If so, what is the best way to concatenate strings in C++? ...
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Java ArrayList replace at specific index

I need help with this java please. I created an ArrayList of bulbs, and I'm trying to replace a bulb at specific index with another bulb. So with the following heading, how do I proceed? ...
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SublimeText encloses lines in white rectangles

It's rather annoying and I can't seem to figure out why. 14 Answers 14 ...