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How do I tell if a regular file does not exist in Bash?
... The unary operator -z tests for a null string, while -n or no operator at all returns True if a string is not empty. ~ ibm.com/developerworks/library/l-bash-test/index.html
– BlueCacti
May 5 '14 at 11:06
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Dilemma: when to use Fragments vs Activities:
.... In the beginning this will not have any sense, but in time, you will actually be able to tell if you need Fragment or not.
There is a good practice I found very helpful for me. It occurred to me while I was trying to explain something to my daughter.
Namely, imagine a box which represents a sc...
Graphviz: How to go from .dot to a graph?
...neato and twopi. If graphiz isn't in your path, figure out where it is installed and run it from there.
You can change the output format by varying the value after -T and choosing an appropriate filename extension after -o.
If you're using windows, check out the installed tool called GVEdit, it ma...
How to put a line comment for a multi-line command [duplicate]
...inside a command this way. The \s express an intent to merge lines, so for all intents and purposes you're trying to intersperse comments in a single line, which doesn't work anyway because a \ has to be at the end of the line to have that effect.
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How might I convert a double to the nearest integer value?
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answered Mar 11 '09 at 4:33
nickfnickf
482k187187 gold badges607607 silver badges703703 bronze badges
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Free FTP Library [closed]
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THANK YOU!!! This really works very well! it lists directory with correct date time :)))) and its fast! sample code: FtpClient ftp = new FtpClient(txtUsername.Text, txtPassword.Text, txtFTPAddress.Text); FtpListItem[] items = ftp.Ge...
JavaFX Application Icon
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answered Apr 12 '12 at 11:08
Michael BerryMichael Berry
57.5k1717 gold badges128128 silver badges184184 bronze badges
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PHP DOMDocument loadHTML not encoding UTF-8 correctly
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echo $dom->saveHTML();
This is not a great workaround, but since not all characters can be represented in ISO-8859-1 (like these katana), it's the safest alternative.
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Python List vs. Array - when to use?
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Basically, Python lists are very flexible and can hold completely heterogeneous, arbitrary data, and they can be appended to very efficiently, in amortized constant time. If you need to shrink and grow your list time-efficiently ...
How to emulate C array initialization “int arr[] = { e1, e2, e3, … }” behaviour with std::array?
...s question is about not having to specify the number of elements and still allow nested types to be directly initialized.)
This question discusses the uses left for a C array like int arr[20]; . On his answer , @James Kanze shows one of the last strongholds of C arrays, it's unique initializat...