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Insertion Sort vs. Selection Sort
...ed element.
So, in a selection sort, sorted elements are found in output order, and stay put once they are found. Conversely, in an insertion sort, the unsorted elements stay put until consumed in input order, while elements of the sorted region keep getting moved around.
As far as swapping is c...
Delete specific line number(s) from a text file using sed?
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On my system, when processing large files, sed appears an order of magnitude slower than a simple combination of head and tail: here's an example of the faster way (without in-place mode): delete-line() { local filename="$1"; local lineNum="$2"; head -n $((lineNum-1)) "$filename"; t...
LINQ Orderby Descending Query
...need to choose a Property to sort by and pass it as a lambda expression to OrderByDescending
like:
.OrderByDescending(x => x.Delivery.SubmissionDate);
Really, though the first version of your LINQ statement should work. Is t.Delivery.SubmissionDate actually populated with valid dates?
...
Rails hidden field undefined method 'merge' error
...he object that backs the form. For example:
controller:
def new
...
@order.service = "test"
...
end</pre>
view:
<%= form_for @order do |f| %>
<%= f.hidden_field :service %>
<%= f.submit %>
<% end %>
...
How do you see recent SVN log entries?
... this option to show ranges of revisions:
To list everything in ascending order:
svn log -r 1:HEAD
To list everything in descending order:
svn log -r HEAD:1
To list everything from the thirteenth to the base of the currently checked-out revision in ascending order:
svn log -r 13:BASE
To ge...
What is the difference between functional and non functional requirement? [closed]
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A system must send an email whenever a certain condition is met (e.g. an order is placed, a customer signs up, etc).
A related non-functional requirement for the system may be:
Emails should be sent with a latency of no greater than 12 hours from such an activity.
The functional requirement...
Concept behind these four lines of tricky C code
...we're going to do (roughly) like the original, and print it out in reverse order, we'll start by putting it in in reverse order. For our first step, we'll just view that bit pattern as a double, and print out the result:
#include <stdio.h>
char string[] = "skcoR++C";
int main(){
printf(...
How to overload functions in javascript?
...ault value for an argument if it is not passed.
Named arguments - Argument order becomes irrelevant and you just name which arguments you want to pass to the function.
Below is a section on each of these categories of argument handling.
Variable Arguments
Because javascript has no type checking ...
C++ SpinLock 自旋锁的代码实现（全网最简略的方式） - C/C++ - 清泛网 - ...
...) {}
virtual ~SpinLock() {}
void lock() { while(f_.test_and_set(memory_order_acquire)); }
void unlock() { f_.clear(memory_order_release); }
};
2、有退避策略的自旋锁，尝试一定次数(65535)失败后让出线程调度权：
class SpinLockWithYield {
atomic_flag f_;
public...
How do I migrate a model out of one django app and into a new one?
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In order to access orm['contenttypes.contenttype'], you also need to add the --freeze contenttypes option to your schemamigration commands.
– Gary
Dec 5 '13 at 18:21
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