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Checking from shell script if a directory contains files
...bin/bash
shopt -s nullglob dotglob # To include hidden files
files=(/some/dir/*)
if [ ${#files[@]} -gt 0 ]; then echo "huzzah"; fi
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Programmatically add custom event in the iPhone Calendar
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Based on Apple Documentation, this has changed a bit as of iOS 6.0.
1) You should request access to the user's calendar via "requestAccessToEntityType:completion:" and execute the event handling inside of a block.
2) You need to commit your e...
Convert bytes to a string
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Maybe this will help somebody further: Sometimes you use byte array for e.x. TCP communication. If you want to convert byte array to string cutting off trailing '\x00' characters the following answer is not enough. Use b'example\x00\x00'.decode('ut...
XDocument or XmlDocument
I am now learning XmlDocument but I've just ran into XDocument and when I try to search the difference or benefits of them I can't find something useful, could you please tell me why you would use one over another ?
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How to programmatically take a screenshot on Android?
...o add a proper permission to save the file:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
And this is the code (running in an Activity):
private void takeScreenshot() {
Date now = new Date();
android.text.format.DateFormat.format("yyyy-MM-dd_hh:mm:ss",...
What is the best way to dump entire objects to a log in C#?
So for viewing a current object's state at runtime, I really like what the Visual Studio Immediate window gives me. Just doing a simple
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How to fetch FetchType.LAZY associations with JPA and Hibernate in a Spring Controller
...ce is to call .size() for this purpose). In Hibernate there is a dedicated method for this (Hibernate.initialize()), but JPA has no equivalent of that. Of course you will have to make sure that the invocation is done, when the session is still available, so annotate your controller method with @Tran...
Data access object (DAO) in Java
I was going through a document and I came across a term called DAO . I found out that it is a Data Access Object. Can someone please explain me what this actually is?
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How do you remove a specific revision in the git history?
...que, but have never needed to remove a revision before. The git-rebase documentation under "Splitting commits" should hopefully give you enough of an idea to figure it out. (Or someone else might know).
From the git documentation:
Start it with the oldest commit you want to retain as-is:
git reb...
Indent multiple lines quickly in vi
... indents much more than 2 blanks (I want just two blanks but > indent something like 5 blanks)
– Kamran Bigdely
Feb 28 '11 at 23:25
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