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If a folder does not exist, create it
...ecified folder. Now I want, if this folder does not exist, to first create it, and then save my file to this folder. If the folder already exists, then just save the file in it.
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What does the Ellipsis object do?
...y surfing the namespace I noticed an odd looking object called Ellipsis , it does not seem to be or do anything special, but it's a globally available builtin.
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What makes Lisp macros so special?
.... Let's invoke our suspension of disbelief and pretend Lisp has a very limited loop macro that just does iteration and no easy way to do the equivalent of list comprehensions.
In Lisp you could write the following. I should note this contrived example is picked to be identical to the Python co...
How do I animate constraint changes?
I'm updating an old app with an AdBannerView and when there is no ad, it slides off screen. When there is an ad it slides on the screen. Basic stuff.
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Is it possible to set a custom font for entire of application?
... certain font for my entire application. I have .ttf file for the same.
Is it possible to set this as default font, at application start up and then use it elsewhere in the application? When set, how do I use it in my layout XMLs?
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Is it a good practice to use an empty URL for a HTML form's action attribute? (action=“”)
...hing you can do is leave out the action attribute altogether. If you leave it out, the form will be submitted to the document's address, i.e. the same page.
It is also possible to leave it empty, and any browser implementing HTML's form submission algorithm will treat it as equivalent to the documen...
Get to UIViewController from UIView?
Is there a built-in way to get from a UIView to its UIViewController ? I know you can get from UIViewController to its UIView via [self view] but I was wondering if there is a reverse reference?
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Why is require_once so bad to use?
...luded/required. Every *_once call means checking that log. So there's definitely some extra work being done there but enough to detriment the speed of the whole app?
... I really doubt it... Not unless you're on really old hardware or doing it a lot.
If you are doing thousands of *_once, you coul...
How can I position my div at the bottom of its container?
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Likely not.
Assign position:relative to #container, and then position:absolute; bottom:0; to #copyright.
#container {
position: relative;
}
#copyright {
position: absolute;
bottom: 0;
}
<div id="container">
<!...
Windows batch: echo without new line
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Using set and the /p parameter you can echo without newline:
C:\> echo Hello World
Hello World
C:\> echo|set /p="Hello World"
Hello World
C:\>
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