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Disable cache for some images
... this problem that feels like a hack but is fairly portable is to add a randomly generated query string to each request for the dynamic image.
So, for example -
<img src="image.png" />
Would become
<img src="image.png?dummy=8484744" />
Or
<img src="image.png?dummy=371662" />...
Best way to test for a variable's existence in PHP; isset() is clearly broken
From the isset() docs :
17 Answers
17
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Postgres: clear entire database before re-creating / re-populating from bash script
...the database and then re-create it. On a UNIX or Linux system, that should do it:
$ dropdb development_db_name
$ createdb developmnent_db_name
That's how I do it, actually.
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Correct way to write line to file?
I'm used to doing print >>f, "hi there"
14 Answers
14
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Why is string concatenation faster than array join?
...sites
The V8 javascript engine (used in Google Chrome) uses this code to do string concatenation:
// ECMA-262, section 15.5.4.6
function StringConcat() {
if (IS_NULL_OR_UNDEFINED(this) && !IS_UNDETECTABLE(this)) {
throw MakeTypeError("called_on_null_or_undefined", ["String.prototype...
What do pty and tty mean?
...pty and tty in some opensource projects, could someone can tell me what do they mean and what is the difference between them? Thanks!
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How to achieve function overloading in C?
... No. printf is not function overloading. it uses vararg !!! And C doesn't support Function Overloading.
– hqt
Jul 29 '12 at 9:49
53
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Generating a unique machine id
...ction that generates an id that is unique for a given machine running a Windows OS.
15 Answers
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How do I revert to a previous package in Anaconda?
If I do
2 Answers
2
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Google Chromecast sender error if Chromecast extension is not installed or using incognito
...ix this bug.
If you are a developer shipping with this library, you can't do anything about it according to Chromecast team. You can only inform users to ignore the errors. (I believe Chromecast team is not entirely correct as the library could, at the least, avoid requesting the extension scipt if...