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Delegates: Predicate vs. Action vs. Func
...add; /*(int a, int b) => { Console.WriteLine(a + b); };*/
Func<string, string> mydel1 = p.conc; /*(string s) => { return "hello" + s; };*/
mydel(2, 3);
string s1= mydel1(" Akhil");
Console.WriteLine(s1);
Console.ReadLine();
...
Build tree array from flat array in javascript
I have a complex json file that I have to handle with javascript to make it hierarchical, in order to later build a tree.
Every entry of the json has :
id : a unique id,
parentId : the id of the parent node (which is 0 if the node is a root of the tree)
level : the level of depth in the tree
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ruby operator “=~” [duplicate]
...
The =~ operator matches the regular expression against a string, and it returns either the offset of the match from the string if it is found, otherwise nil.
/mi/ =~ "hi mike" # => 3
"hi mike" =~ /mi/ # => 3
"mike" =~ /ruby/ # => nil
You can place the string/regex o...
Android - Round to 2 decimal places [duplicate]
...someone show me how to round double, to get value that I can display as a
String and ALWAYS have 2 decimal places?
2 Answe...
How to convert integer to string in C? [duplicate]
...afer in that you specify how much input you're taking. Otherwise, If your string has multi-byte characters, or ends up longer than you expected due to large numbers, you can overflow your buffer and crash your program (etc).
– gone
Apr 23 '14 at 9:06
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Order by multiple columns with Doctrine
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The orderBy method requires either two strings or an Expr\OrderBy object. If you want to add multiple order declarations, the correct thing is to use addOrderBy method, or instantiate an OrderBy object and populate it accordingly:
# Inside a Repository method:...
Getting the thread ID from a thread
...t work with managed threads, I'm sure, all you need to find is the thread handle and pass it to that function.
GetCurrentThreadId returns the ID of the current thread.
GetCurrentThreadId has been deprecated as of .NET 2.0: the recommended way is the Thread.CurrentThread.ManagedThreadId property.
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Can't execute jar- file: “no main manifest attribute”
...ere com.mypackage.MyClass is the class holding the public static void main(String[] args) entry point.
Note that there are several ways to get this done either with the CLI, Maven, Ant or Gradle:
For CLI, the following command will do: (tks @dvvrt)
jar cmvf META-INF/MANIFEST.MF <new-jar-filename&...
Unable to forward search Bash history similarly as with CTRL-r
...ds in the History":
To search backward in the history for a particular string, type C-r.
Typing C-s searches forward through the history.
The problem with Ctrl-S however is that sometimes collides with XON/XOFF flow control (in Konsole for instance). The searching is a readline feature howev...
Return multiple columns from pandas apply()
...s_pass_series_return_series(series):
series['size_kb'] = locale.format_string("%.1f", series['size'] / 1024.0, grouping=True) + ' KB'
series['size_mb'] = locale.format_string("%.1f", series['size'] / 1024.0 ** 2, grouping=True) + ' MB'
series['size_gb'] = locale.format_string("%.1f", ser...