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What does @media screen and (max-width: 1024px) mean in CSS?
...
That’s a media query. It prevents the CSS inside it from being run unless the browser passes the tests it contains.
The tests in this media query are:
@media screen — The browser identifies itself as being in the “screen” cat...
Delete keychain items when an app is uninstalled
...efaults on the first run of your app if it's not already set. There's a comment where you should put code to delete values from the keychain. Synchronize can be called to make sure the "FirstRun" key/value is immediately persisted in case the user kills the app manually before the system persists it...
Textarea to resize based on content length [duplicate]
...and then reading the scrollHeight property:
function textAreaAdjust(element) {
element.style.height = "1px";
element.style.height = (25+element.scrollHeight)+"px";
}
<textarea onkeyup="textAreaAdjust(this)" style="overflow:hidden"></textarea>
It works under Firefox 3, IE 7...
grep a file, but show several surrounding lines?
...nd -A num for the number of lines after the match.
grep -B 3 -A 2 foo README.txt
If you want the same number of lines before and after you can use -C num.
grep -C 3 foo README.txt
This will show 3 lines before and 3 lines after.
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Random date in C#
I'm looking for some succinct, modern C# code to generate a random date between Jan 1 1995 and the current date.
7 Answers
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What does ':' (colon) do in JavaScript?
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var o = {
r: 'some value',
t: 'some other value'
};
is functionally equivalent to
var o = new Object();
o.r = 'some value';
o.t = 'some other value';
share
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Generate a random alphanumeric string in Cocoa
I want to call a method, pass it the length and have it generate a random alphanumeric string.
20 Answers
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Find all files in a directory with extension .txt in Python
...ow would you create a file or list with that info?
– Merlin
Oct 19 '10 at 3:48
74
@ghostdog74: In...
Multiline TextView in Android?
...axLines="4"
android:lines="4"
android:text="Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat."></TextVi...
Let JSON object accept bytes or let urlopen output strings
With Python 3 I am requesting a json document from a URL.
12 Answers
12
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