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Check whether a string is not null and not empty
How can I check whether a string is not null and not empty?
31 Answers
31
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Block Declaration Syntax List
Block syntax in Objective C (and indeed C, I presume) is notoriously incongruous. Passing blocks as arguments looks different than declaring blocks as ivars, which looks different than typedef ing blocks.
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Serialize form data to JSON [duplicate]
I want to do some pre-server-validation of a form in a Backbone.js model. To do this I need to get the user input from a form into usable data.
I found three methods to do this:
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Android - shadow on text?
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You should be able to add the style, like this (taken from source code for Ringdroid):
<style name="AudioFileInfoOverlayText">
<item name="android:paddingLeft">4px</item>
<item name="android:paddingBottom">4px</item>
&l...
What is meant by “managed” vs “unmanaged” resources in .NET?
...ider isn't written entirely in managed code.
This is why, for something like a database connection, it's recommended you write your code thusly:
using (var connection = new SqlConnection("connection_string_here"))
{
// Code to use connection here
}
As this ensures that .Dispose() is called o...
What does (angle brackets) mean in Java?
I am currently studying Java and have recently been stumped by angle brackets(). What exactly do they mean?
6 Answers
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How do I get the path of a process in Unix / Linux
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On Linux, the symlink /proc/<pid>/exe has the path of the executable. Use the command readlink -f /proc/<pid>/exe to get the value.
On AIX, this file does not exist. You could compare cksum <actual path to binary> and cksum ...
Is it possible to implement a Python for range loop without an iterator variable?
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Off the top of my head, no.
I think the best you could do is something like this:
def loop(f,n):
for i in xrange(n): f()
loop(lambda: <insert expression here>, 5)
But I think you can just live with the extra i variable.
Here is the option to us...
how to convert milliseconds to date format in android?
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UttamUttam
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Remove credentials from Git
I'm working with several repositories, but lately I was just working in our internal one and all was great.
35 Answers
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