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Should I commit or rollback a read transaction?
...you started a transaction, you should close it. Committing releases any locks you may have had, and is equally sensible with ReadUncommitted or Serializable isolation levels. Relying on implicit rollback - while perhaps technically equivalent - is just poor form.
If that hasn't convinced you, just ...
django - why is the request.POST object immutable?
As the title asks, why did the Django guys decide to implement the request.POST object with a querydict (which, of course, in turn, makes the whole thing immutable?)
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Filter data.frame rows by a logical condition
...rame based on a logical condition. Let's suppose that I have data frame like
9 Answers
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How to hide underbar in EditText
...he EditText to have a custom transparent drawable or just use
android:background="@android:color/transparent"
or
android:background="@null"
or Programmatically
editText.setBackgroundResource(android.R.color.transparent);
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PHP Session Security
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There are a couple of things to do in order to keep your session secure:
Use SSL when authenticating users or performing sensitive operations.
Regenerate the session id whenever the security level changes (such as logging in). You can even regenerate the session id ever...
Repeating characters in VIM insert mode
...eating a character while in Vim's insert mode? For example, say I would like to insert 80 dashes, in something like emacs I would type:
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How can I create a self-signed cert for localhost?
...Use 'localhost' for the 'Common name'
openssl req -x509 -sha256 -nodes -newkey rsa:2048 -days 365 -keyout localhost.key -out localhost.crt
# Add the cert to your keychain
open localhost.crt
In Keychain Access, double-click on this new localhost cert. Expand the arrow next to "Trust" and choose to...
How to set environment variables from within package.json
How to set some environment variables from within package.json to be used with npm start like commands?
14 Answers
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Why aren't variables declared in “try” in scope in “catch” or “finally”?
... (and possibly other languages as well), variables declared in a "try" block are not in scope in the corresponding "catch" or "finally" blocks. For example, the following code does not compile:
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jQuery 1.9 .live() is not a function
... jQuery from 1.8 to 2.1. I suddenly discovered that the .live() stops working.
I get the error TypeError: $(...).live is not a function .
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