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What makes a keychain item unique (in iOS)?
...ecItem yet.
For a keychain item of class kSecClassIdentity I haven't found info on the primary key fields in the open source files, but as an identity is the combination of a private key and a certificate, I assume the primary key is the combination of the primary key fields for kSecClassKey and kSe...
S3 Static Website Hosting Route All Paths to Index.html
...
See stackoverflow.com/a/10622078/4185989 for more info on how a TTL of 0 gets treated (short version: it gets cached by Cloudfront but a If-Modified-Since GET request is sent to the origin) - may be a useful consideration for people not wanting to set up a server like in st...
Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
...start from reading about processor functions you are using, there are some info, especially about rsqrt (cpu is using internal lookup table with huge approximation, which makes it much simpler to get the result). It may seem, that rsqrt is so much faster than sqrt, that 1 additional mul operation (w...
How to set environment variables in Python?
...t either for the current process or child processes. See the docs for more info: docs.python.org/2/library/os.html#os.environ
– Evan
Apr 21 '16 at 20:57
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ls command: how can I get a recursive full-path listing, one line per file?
... You can even use printf output in order to display needed contextual info (e.g. find . -type f -printf '%p %u\n')
– xsubira
Apr 14 '15 at 8:42
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Input widths on Bootstrap 3
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ELSE
APPLY 'col-lg-1' (~95px)
See Bootstrap 3 grid system for more info. I hope I was clear otherwise let me know and I'd elaborate.
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Xcode: issue “file xxx.png is missing from working copy” at project building
...nd as the last occurrence is the one it uses to try and determine revision info). Simply running Update worked for me. When I added some new images, I actually had to manually select "add" on the 2x/3x variants in the File Inspector pane as well. Weird.
– Android3000
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jQuery get input value after keypress
...s).val() or just this.value to access the current input value.
DEMO here
Info about .keypress from jQuery docs,
The keypress event is sent to an element when the browser registers
keyboard input. This is similar to the keydown event, except in the
case of key repeats. If the user presses a...
What's the difference between ng-model and ng-bind
...'s answer gets to the heart of the question nicely. Here's some additional information....
Filters & Formatters
ng-bind and ng-model both have the concept of transforming data before outputting it for the user. To that end, ng-bind uses filters, while ng-model uses formatters.
filter (ng-bind...
How to check if a line is blank using regex
...atch the beginning and end of the line.
References:
regular-expressions.info/Anchors, Character Classes, and Repetition.
A non-regex alternative:
You can also check if a given string line is "blank" (i.e. containing only whitespaces) by trim()-ing it, then checking if the resulting string is...