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How to force a web browser NOT to cache images
...o-cache headers - complete set
// these copied from [php.net/header][1], tested myself - works
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); // Some time in the past
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-store, no-cache, must-revalidate...
Unable to resolve “unable to get local issuer certificate” using git on Windows with self-signed cer
I am using Git on Windows. I installed the msysGit package. My test repository has a self signed certificate at the server. I can access and use the repository using HTTP without problems. Moving to HTTPS gives the error:
...
Vertical (rotated) label in Android
...erride fun onDraw(c: Canvas) {
// c.drawColor(0xffffff80); // TEST
if (layout == null)
return
c.withSave {
if (topDown) {
val fm = paint.fontMetrics
translate(textSize - (fm.bottom + fm.descent), 0f)
...
What is the coolest thing you can do in
...n Windows 7. However it is offered as a separate download here. I have not tested this so cannot verify whether it operates.
share
edited Sep 2 '11 at 12:56
...
Swift class introspection & generics
... = aGivenObject.dynamicType
var freshInstance = typeOfObject()
I quickly tested it with String:
let someType = "Fooo".dynamicType
let emptyString = someType()
let threeString = someType("Three")
which worked fine.
share...
Python hashable dicts
...es, it is necessary to have the hash take the values into account. The fastest way to do that is:
class Hashabledict(dict):
def __hash__(self):
return hash((frozenset(self), frozenset(self.itervalues())))
This is quicker than frozenset(self.iteritems()) for two reasons. First, the f...
Python's json module, converts int dictionary keys to strings
... isinstance(v, unicode) else v) for k,v in x.items()}
return x
Which tests the instance of the values and casts them only if they are strings objects (unicode to be exact).
Both functions assumes keys (and values) to be integers.
Thanks to:
How to use if/else in a dictionary comprehension?...
How can I find non-ASCII characters in MySQL?
...coded by the byte sequence 0x0101) - it would be deemed "ASCII" using this test: a false negative; indeed, some character sets do not encode ASCII characters within 0x00 to 0x7f whereupon this solution would yield a false positive. DO NOT RELY UPON THIS ANSWER!
– eggyal
...
Get the last non-empty cell in a column in Google Sheets
...
This is simpler and I have tested this. Works great.
– Ciaran
Dec 30 '14 at 15:43
25
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What does “program to interfaces, not implementations” mean?
...nterface. There's many reasons, but two of the easiest to explain are
1) Testing.
Let's say I have my entire database code in one class. If my program knows about the concrete class, I can only test my code by really running it against that class. I'm using -> to mean "talks to".
WorkerCl...