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Better to 'try' something and catch the exception or test if it's possible first to avoid an excepti
...t).
Python encourages the use of exceptions, which you handle is a phrase from Dive Into Python. Your example not only handles the exception (gracefully), rather than letting it silently pass, also the exception occurs only in the exceptional case of index not being found (hence the word exception!...
Using a custom image for a UITableViewCell's accessoryView and having it respond to UITableViewDeleg
...ction locates the row by getting the location in the table view of a touch from the event provided by the button and asking the table view for the index path of the row at that point.
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What is recursion and when should I use it?
...ily be replaced by more efficient iteration. After all, recursion suffers from function call overhead, which in the example above could be substantial compared to the operation inside the function itself.
So the whole reason to do recursion rather than iteration should be to take advantage of the ...
How to prevent logback from outputting its own status at the start of every log when using a layout
...e reason cannot fix the problem, but want to remove the status-information from the console, you can instead configure an alternative StatusListener. Use the NopStatusListener to completely remove the status-information:
<configuration>
<statusListener class="ch.qos.logback.core.status.N...
How do I convert a decimal to an int in C#?
...
Use Convert.ToInt32 from mscorlib as in
decimal value = 3.14m;
int n = Convert.ToInt32(value);
See MSDN. You can also use Decimal.ToInt32. Again, see MSDN. Finally, you can do a direct cast as in
decimal value = 3.14m;
int n = (int) value;
...
How to fully delete a git repository created with init?
... also type cd (the space is important), drag and drop your git repo folder from Finder to the terminal window, press return, then type rm -fr .git, then return again.
On Ubuntu, use shortcut Ctrl + H.
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How do I call the default deserializer from a custom deserializer in Jackson
...ot use sub-classing, since information default deserializers need is built from class definitions.
So what you can most likely use is to construct a BeanDeserializerModifier, register that via Module interface (use SimpleModule). You need to define/override modifyDeserializer, and for the specific ...
Filter Java Stream to 1 and only 1 element
... + b);
})
.get();
This obtains the sole matching element from the stream, throwing
NoSuchElementException in case the stream is empty, or
IllegalStateException in case the stream contains more than one matching element.
A variation of this approach avoids throwing an exception ...
How do I output coloured text to a Linux terminal?
...ally the letter m. The numbers describe the colour and format to switch to from that point onwards.
The codes for foreground and background colours are:
foreground background
black 30 40
red 31 41
green 32 42
yellow 33 43
blue ...
How can I add a key/value pair to a JavaScript object?
...ssign() method is used to copy the values of all enumerable own properties from one or more source objects to a target object. It will return the target object.
Live example
var obj = {key1: "value1", key2: "value2"};
Object.assign(obj, {key3: "value3"});
document.body.innerHTML = JSON.stringi...