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Match two strings in one line with grep
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You can use
grep 'string1' filename | grep 'string2'
Or
grep 'string1.*string2\|string2.*string1' filename
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Display clearColor UIViewController over UIViewController
...ly accepted answer is still valid for legacy reasons, but this is the recommended method.
– Tomasz Bąk
Feb 19 '15 at 12:40
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Angularjs prevent form submission when input validation fails
I'm writing a simple login form using angularjs with some client side input validation to check that the user name and password is not empty and longer than three characters. See the below code:
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Import a file from a subdirectory?
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Take a look at the Packages documentation (Section 6.4) here: http://docs.python.org/tutorial/modules.html
In short, you need to put a blank file named
__init__.py
in the "lib" directory.
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Disable scrolling in webview?
...an iPhone developer only and now I have decided to give Android a whirl. Something I haven't been able to figure out on Android is how to programmatically prevent scrolling in a WebView ?
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Command-line Tool to find Java Heap Size and Memory Used (Linux)?
Is there a Command-line Tool (Linux) to check Heap Size (and Used Memory) of a Java Application?
17 Answers
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How to make HTML input tag only accept numerical values?
...ut type number to restrict only number entries:
<input type="number" name="someid" />
This will work only in HTML5 complaint browser. Make sure your html document's doctype is:
<!DOCTYPE html>
See also https://github.com/jonstipe/number-polyfill for transparent support in older bro...
PDOException “could not find driver”
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@Hristo I think the pdo_mysql module did not come as a part of the default package in Debian Lenny
– Mike Moore
Jun 13 '10 at 22:53
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android:drawableLeft margin and/or padding
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As cephus mentioned android:drawablePadding will only force padding between the text and the drawable if the button is small enough.
When laying out larger buttons you can use android:drawablePadding in conjunction with android:paddin...
How to allow to accept only image files?
...PEGs and GIFs you can use the following code:
<input type="file" name="myImage" accept="image/x-png,image/gif,image/jpeg" />
Or simply:
<input type="file" name="myImage" accept="image/*" />
Note that this only provides a hint to the browser as to what file-types t...