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Difference between array_map, array_walk and array_filter
...onal array. Every element's value changes in place into a more informative string specifying its key, category and value.
<?php
$f = function(&$item,$key,$prefix) {
$item = "$key: $prefix: $item";
};
array_walk($nu, $f,"fruit");
var_dump($nu);
?>
See demo
Note: the callba...
How to write log base(2) in c/c++
...uld work assuming integer is 32 bit wide, no ? For 64 bit it would have an extra i>>32 . But since Java has only 32-bit ints, it is fine. For C/C++ it needs to be considered.
– Zoso
May 27 '17 at 8:12
...
Why would iterating over a List be faster than indexing through it?
...effectively O(N^2) just to traverse the list!
If instead I did this:
for(String s: list) {
System.out.println(s);
}
then what happens is this:
head -> print head -> item1 -> print item1 -> item2 -> print item2 etc.
all in a single traversal, which is O(N).
Now, going to th...
C++: How to round a double to an int? [duplicate]
...te & possibly slow. See clang-tidy for an explanation : clang.llvm.org/extra/clang-tidy/checks/…
– ACyclic
Nov 2 '16 at 13:36
...
How do I open a second window from the first window in WPF?
... Owner method basically ties the window to another window in case you want extra windows with the same ones.
LoadingScreen lc = new LoadingScreen();
lc.Owner = this;
lc.Show();
Consider this as well.
this.WindowState = WindowState.Normal;
this.Activate();
...
How do I properly clean up Excel interop objects?
...Set = CharSet.Unicode)]
static extern IntPtr CreateJobObject(object a, string lpName);
[DllImport("kernel32.dll")]
static extern bool SetInformationJobObject(IntPtr hJob, JobObjectInfoType infoType, IntPtr lpJobObjectInfo, uint cbJobObjectInfoLength);
[DllImport("kernel32.dll", Set...
Good tool to visualise database schema? [closed]
...
I think this answer needs extra explanation: norbauer.com/rails-consulting/notes/…
– fguillen
Jun 14 '13 at 10:24
...
What's the fastest algorithm for sorting a linked list?
...ult = heads[i];
}
}
return result;
}
list_t* make_list ( char* st
How to disable postback on an asp Button (System.Web.UI.WebControls.Button)
...se"', otherwise it will add 'WebForm_DoPostBackWithOptions' and a bunch of extra markup.
– Carter Medlin
Aug 12 '13 at 18:41
...
How can I auto-elevate my batch file, so that it requests from UAC administrator rights if required?
...Note that you need to use for to be able to take advantage of the advanced string functions, such as %%~nk, which extracts just the filename.
Optimized script structure, improvements (added variable vbsGetPrivileges which is now referenced everywhere allowing to change the path or name of the file e...