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HMAC-SHA1 in bash
...ution, but mainly to prove that the results are the same, we can also call PHP's hmac_sha1() from the command line:
[me@home]$ echo '<?= hash_hmac("sha1", "value", "key") ?>' | php
57443a4c052350a44638835d64fd66822f813319
...
How to delete a row by reference in data.table?
...nce yet.
data.table can add and delete columns by reference since it over-allocates the vector of column pointers, as you know. The plan is to do something similar for rows and allow fast insert and delete. A row delete would use memmove in C to budge up the items (in each and every column) after t...
Does the C++ standard mandate poor performance for iostreams, or am I just dealing with a poor imple
...sing work. In your char[] array example, the array of the required size is allocated in advance. In your vector and ostringstream example you are forcing the objects to repeatedly allocate and reallocate and possibly copy data many times as the object grows.
With std::vector this is easly resolved...
Mapping over values in a python dictionary
...e function the way you want (the name chosen in this answer is inspired by PHP's array_walk() function).
Note: Neither the try-except block nor the return statements are mandatory for the functionality, they are there to further mimic the behavior of the PHP's array_walk.
...
What's the difference between deque and list STL containers?
...ime is linear if capacity is 10 and size is also 10. Its because it has to allocate and copy all the elements to new memory.
– aJ.
Apr 16 '10 at 3:25
5
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How to change the Push and Pop animations in a navigation based app
...s managed to complete this task.
For Push:
MainView *nextView=[[MainView alloc] init];
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationDuration:0.75];
[self.navigationController pushViewController:nextView animated:NO];
[UIV...
Preserve Line Breaks From TextArea When Writing To MySQL
...
Two solutions for this:
PHP function nl2br():
e.g.,
echo nl2br("This\r\nis\n\ra\nstring\r");
// will output
This<br />
is<br />
a<br />
string<br />
Wrap the input in <pre></pre> tags.
See: W3C Wiki - HTML/El...
How do I close a single buffer (out of many) in Vim?
... buffer id using
:buffers
you will see list of buffers there like
1 a.php
2 b.php
3 c.php
if you want to remove b.php from buffer
:2bw
if you want to remove/close all from buffers
:1,3bw
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How to unit test an object with database queries
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I've been using PHP's PDO as my lowest level access to the database, over which I extracted an interface. Then I built an application aware database layer on top of that. This is the layer that holds all the raw SQL queries and other infor...
Objective-C class -> string like: [NSArray className] -> @“NSArray”
...
Class arrayClass = NSClassFromString (name);
id anInstance = [[arrayClass alloc] init];
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