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How can I determine whether a 2D Point is within a Polygon?
...float v2y2
) {
float d1, d2;
float a1, a2, b1, b2, c1, c2;
// Convert vector 1 to a line (line 1) of infinite length.
// We want the line in linear equation standard form: A*x + B*y + C = 0
// See: http://en.wikipedia.org/wiki/Linear_equation
a1 = v1y2 - v1y1;
b1 = v1x1 ...
Custom Cell Row Height setting in storyboard is not responding
...cally because this answer applies to Interface Builder/Storyboards. If you select the cell in IB, then the Size Inspector shows Row Height at the top (with a "custom" checkbox), but if you select the whole table view the Size Inspector shows Row Height at the top there too (no "custom" in this case)...
How to escape the % (percent) sign in C's printf?
...rsion specification) causes a '%' character to be written with no argument converted.
The string really has 2 '%' characters inside (as opposed to escaping characters: "a\bc" is a string with 3 non null characters; "a%%b" is a string with 4 non null characters).
...
Maximum number of records in a MySQL database table
...g with multiple billions of entries? (which would probably just make your select statements melt down long before then)
– Kzqai
Apr 26 '10 at 19:35
2
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Get current time as formatted string in Go?
What's the best way to get the current timestamp in Go and convert to string? I need both date and time in eg. YYYYMMDDhhmmss format.
...
Simplest way to profile a PHP script
...connect_to_db();
prof_flag("Perform query");
// Get all the data
$select_query = "SELECT * FROM data_table";
$result = mysql_query($select_query);
prof_flag("Retrieve data");
$rows = array();
$found_data=false;
while($r = mysql_fetch_assoc($result))
{
$found_data=tru...
How do I interactively unstage a particular hunk in git?
...
@Nawaz: That's correct - git add -p filename selectively stages changes from that file, and git reset -p filename selectively unstages changes. There's also git checkout -p -- filename, which lets you selectively discard changes from a file. Warning: each of add and res...
How do you list all triggers in a MySQL database?
...w triggers;
or you can access the INFORMATION_SCHEMA table directly by:
select trigger_schema, trigger_name, action_statement
from information_schema.triggers
You can do this from version 5.0.10 onwards.
More information about the TRIGGERS table is here.
...
unresolved reference to object [INFORMATION_SCHEMA].[TABLES]
...database reference to master:
Under the project, right-click References.
Select Add database reference....
Select System database.
Ensure master is selected.
Press OK.
Note that it might take a while for VS to update.
sh...
How to pass parameters in GET requests with jQuery
...
you need to convert the object into GET parameters with jQuery.param() function, so using jQuery you should use data:$.param({ajaxid: 4, UserID: UserID, EmailAddress: EmailAddress}), instead of data: { ajaxid: 4, UserID: UserID...