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Python Dictionary Comprehension
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The main purpose of a list comprehension is to create a new list based on another one without changing or destroying the original list.
Instead of writing
l = []
for n in range(1, 11):
l.append(n)
or
l = [n for n in range(1, 11)]
you should write only
l = r...
What are the relative strengths and weaknesses of Git, Mercurial, and Bazaar? [closed]
...directories. Another issue with git is that has many operations (such as rebase) which make it easy to modify history (in a sense -- the content referred to by a hash will never change, but references to that hash may be lost); some purists (myself included) don't like that very much.
Bazaar is rea...
What is an Endpoint?
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Why not just call it (i.e. so called "endpoint") a "base URI"? Is there a fundamental difference between an "endpoint" and a "base URI"? Thanks.
– Withheld
Jul 28 '15 at 17:48
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Am I immoral for using a variable name that differs from its type only by case?
...et tripped up by being unable to discern between types and their instances based on this naming convention.
– Andrew Hare
Sep 14 '09 at 18:19
2
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How to design a database for User Defined Fields?
...clarative
referential
integrity is rarely out-performed by
trigger-based or application level
constraint enforcement.
Cons:
This could create a lot of tables.
Enforcing schema separation and/or a
naming convention would alleviate
this.
There is more application code
needed to operate...
Select parent element of known element in Selenium
...Close</span>
</a>
Now that you need to select parent tag 'a' based on <span> text, then use
driver.findElement(By.xpath("//a[.//span[text()='Close']]"));
Explanation: Select the node based on its child node's value
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How do I know the script file name in a Bash script?
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me=`basename "$0"`
For reading through a symlink1, which is usually not what you want (you usually don't want to confuse the user this way), try:
me="$(basename "$(test -L "$0" && readlink "$0" || echo "$0")")"
IMO, ...
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
I'm working on getting my database to talk to my Java programs.
38 Answers
38
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How can I convert a comma-separated string to an array?
...e you have elements in array, if you're expecting data from a server / database you will run into trouble since ''.split(',') has a length === 1 IE: ''.split(',') === ['']
– oportocala
Aug 2 '16 at 15:49
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When should I use RequestFactory vs GWT-RPC?
...ic, non-GWT-compatible, code inside your class. Because the RPC system is based on having the same concrete type on both the client and the server, you can hit a complexity wall based on the capabilities of your GWT client.
To get around the use of incompatible code, many users wind up creating a ...