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How do I get the first n characters of a string without checking the size or going out of bounds?
How do I get up to the first n characters of a string in Java without doing a size check first (inline is acceptable) or risking an IndexOutOfBoundsException ?
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Should I use string.isEmpty() or “”.equals(string)?
I'm usually testing this alongside a string == null , so I'm not really concerned about a null-safe test. Which should I use?
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Read logcat programmatically within application
.../Tutorial/Java/0040__Data-Type/SimpleDateFormat.htm
private static final String ANDROID_LOG_TIME_FORMAT = "MM-dd kk:mm:ss.SSS";
private static SimpleDateFormat logCatDate = new SimpleDateFormat(ANDROID_LOG_TIME_FORMAT);
public static String lineEnding = "\n";
private final String logKey;
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Split string into an array in Bash
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IFS=', ' read -r -a array <<< "$string"
Note that the characters in $IFS are treated individually as separators so that in this case fields may be separated by either a comma or a space rather than the sequence of the two characters. Interestingly though,...
Passing a string with spaces as a function argument in bash
I'm writing a bash script where I need to pass a string containing spaces to a function in my bash script.
8 Answers
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Reading a List from properties file and load with spring annotation @Value
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Using Spring EL:
@Value("#{'${my.list.of.strings}'.split(',')}")
private List<String> myList;
Assuming your properties file is loaded correctly with the following:
my.list.of.strings=ABC,CDE,EFG
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ArrayBuffer to base64 encoded string
...eed an efficient (read native) way to convert an ArrayBuffer to a base64 string which needs to be used on a multipart post.
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What are the undocumented features and limitations of the Windows FINDSTR command?
...nts and/or using the /F:file option.
stdin via redirection findstr "searchString" <file
data stream from a pipe type file | findstr "searchString"
Arguments/options take precedence over redirection, which takes precedence over piped data.
File name arguments and /F:file may be combined. Multi...
Read and write a String from text file
...cuments directory. The following code shows how to read and write a simple string. You can test it on a playground.
Swift 3.x - 5.x
let file = "file.txt" //this is the file. we will write to and read from it
let text = "some text" //just a text
if let dir = FileManager.default.urls(for: .documen...
Does Python have a string 'contains' substring method?
I'm looking for a string.contains or string.indexof method in Python.
10 Answers
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