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Append an object to a list in R in amortized constant time, O(1)?
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If it's a list of string, just use the c() function :
R> LL <- list(a="tom", b="dick")
R> c(LL, c="harry")
$a
[1] "tom"
$b
[1] "dick"
$c
[1] "harry"
R> class(LL)
[1] "list"
R>
That works on vectors too, so do I get the bo...
Preserve Line Breaks From TextArea When Writing To MySQL
...ons for this:
PHP function nl2br():
e.g.,
echo nl2br("This\r\nis\n\ra\nstring\r");
// will output
This<br />
is<br />
a<br />
string<br />
Wrap the input in <pre></pre> tags.
See: W3C Wiki - HTML/Elements/pre
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How to add a list item to an existing unordered list?
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I love this. I hate messing with strings and quotes :) BTW: Other option would be stackoverflow.com/a/4673436/112000
– Tomáš Fejfar
Apr 10 '12 at 11:53
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Debugging sqlite database on the device
...(preferably a hex-viewer) and check whether it starts with SQLite format 3 string. Also make sure you have a correct sqlite version (i.e. you're not trying to open sqlite3 database with sqlite2 executable). And you may also try other SQLite clients (for example SQLiteStudio). Hope it helps.
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Counting the occurrences / frequency of array elements
...e values as object keys to count them means you're casting those values to strings and then counting that value. [5, "5"] will simply say you've got "5" two times. Or counting instances some different objects is just gonna tell you there's a lot of [object Object]. Etc. etc.
– ...
Xcode 5 & Asset Catalog: How to reference the LaunchImage?
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- (NSString *)splashImageNameForOrientation:(UIInterfaceOrientation)orientation {
CGSize viewSize = self.view.bounds.size;
NSString* viewOrientation = @"Portrait";
if (UIDeviceOrientationIsLandscape(orientation)) {
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How to get current relative directory of your Makefile?
...y around this since $(MAKEFILE_LIST) with two makefiles gives you a single string "Makefile One Makefile Two, which cannot handle spaces
– mrosales
Jan 24 '15 at 17:05
2
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Preventing form resubmission
... won't trigger the confirmation alert popup if it gets a GET method (query string) in the url.
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Control cannot fall through from one case label
...the fact that you can still do C-Style fall-throughs using goto case "some String".
– NH.
Jan 3 '18 at 22:00
3
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Start a git commit message with a hashmark (#)
...(pclouds):
config: be strict on core.commentChar
We don't support comment strings (at least not yet). And multi-byte character encoding could also be misinterpreted.
The test with two commas is updated because it violates this. It's added with the patch that introduces core.commentChar in eff80a9 (...