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How to get a pixel's x,y coordinate color from an image?
Is there any way to check if a selected(x,y) point of a PNG image is transparent?
4 Answers
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static const vs #define
...l than a post-preprocessing "if" as the code need not be compilable if not selected by the preprocessor), use #undef-ine, redefine etc.
substituted text has to be exposed:
in the translation unit it's used by, which means macros in libraries for client use must be in the header, so make and other ...
Which is more efficient: Multiple MySQL tables or one large table?
...ectly then you should only need the intense lookup by doing something like select * from users where name="bob". Once you have bob then you are using an index to find the joined tables to bob which is significantly faster because you are using bob's id. This happens regardless of if you are doing a ...
Unit Test? Integration Test? Regression Test? Acceptance Test?
...
@Honey Well, the regression test suite is mostly a selection of some or all of your unit and integration tests. It's a policy thing, how much regression testing you want to do. The main difference is that Unit tests are done in active development while regression tests is mor...
PHP & mySQL: Year 2038 Bug: What is it? How to solve it?
...ything, I asked my backend (MSSQL) to do this job instead of PHP!
$qry = "select DATEADD(month, 1, :date) next_date ";
$rs_tmp = $pdo->prepare($qry);
$rs_tmp->bindValue(":date", '2038/01/15');
$rs_tmp->execute();
$row_tmp = $rs_tmp->fetch(PDO::FETCH_ASSOC);
echo $row_tmp['next_date'];
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Create a Date with a set timezone without using a string representation
...urs to find out that the reason was a wrong month.
– Select0r
Feb 28 '12 at 14:17
4
This answer i...
Does “git fetch --tags” include “git fetch”?
...ly fetches tags on tracked branches. We have a script that allows users to select a working branch, so by default there are many branches that are not currently tracked by an individual.
– davidA
Jul 30 '09 at 22:46
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HashSet versus Dictionary w.r.t searching time to find if an item exists
...value);
}
var testPoints = Enumerable.Repeat(1, TestReps).Select(_ => rand.Next()).ToArray();
var timer = new Stopwatch();
var total = 0;
timer.Restart();
for (int i = 0; i < TestReps; i++)
{
var newKey =...
Java GUI frameworks. What to choose? Swing, SWT, AWT, SwingX, JGoodies, JavaFX, Apache Pivot? [close
... a UI and users complain that something doesn't work for them because they selected an odd theme.
JGoodies is another layer on top of Swing, like SwingX. It tries to make Swing more pleasant to use. The web site looks great. Let's have a look at the tutorial ... hm ... still searching ... hang on. I...
Using an ORM or plain SQL? [closed]
...ent store, when a ORM tool frees you from writing boilerplate SQL queries (selects by PK or by predicates, inserts, updates and deletes) and lets you concentrate on the problem domain.
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