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In where shall I use isset() and !empty()
I read somewhere that the isset() function treats an empty string as TRUE , therefore isset() is not an effective way to validate text inputs and text boxes from a HTML form.
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How do I install from a local cache with pip?
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pip wheel is an excellent option that does what you want with the extra feature of pre-compiling the packages. From the official docs:
Build wheels for a requirement (and all its dependencies):
$ pip wheel --wheel-dir=/tmp/wheelhouse SomePackage
Now your /tmp/wheelhouse directory...
GridLayout and Row/Column Span Woe
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It feels pretty hacky, but I managed to get the correct look by adding an extra column and row beyond what is needed. Then I filled the extra column with a Space in each row defining a height and filled the extra row with a Space in each col defining a width. For extra flexibility, I imagine these ...
Batch files - number of command line arguments
...iant of for only works for arguments that look like file names, not option strings such as -?. Using quotes (for %%i in ("%*") ...) works for argument like -? but again fails for quoted arguments because of nested quotes. The only robust way seems to involve shift...
– Ferdin...
Generate UML Class Diagram from Java Project [closed]
... sucks. Hard. Instructions want users to prefix all properties with an 'f' char to sniff them. It is destructive, too, and adds a bunch of its own comments to ALL class files. Also, instructions are non-intuitive. If someone can refute my experience (based on the current version in Kepler), please d...
Table Naming Dilemma: Singular vs. Plural Names [closed]
...ers WHERE Customers.CustomerID = 100
You have saved 3 letters, 3 bytes, 3 extra keyboard hits :)
And finally, you can name those ones messing up with reserved names like:
User > LoginUser, AppUser, SystemUser, CMSUser,...
Or use the infamous square brackets [User]
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#pragma once vs include guards? [duplicate]
...inks, network filesystems, and even name collision --try with a file named string.h or something like that--). Not taking into account speed, you could have a script that substituted any, say, %INCLUDE_GUARD% in a file for an automatically-managed guard symbol; you would write headers as header.hpp....
Executing multiple commands from a Windows cmd script
...e call for it as in call mvn install; normally you don't need to create an extra cmd file.
– jfpoilpret
Sep 13 '12 at 8:17
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Set Django IntegerField by choices=… name
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FWIW, if you need set it from a literal string (perhaps from a form, user input, or similar) you can then just do: thing.priority = getattr(thing, strvalue.upper()).
– mrooney
Feb 24 '13 at 23:22
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Why should I use Deque over Stack?
...et or SortedMap).
We may use the preferred style of declaring like Set<String> set = new HashSet<String>();see reasons here.
But Stack class: 1) don't have its own interface; 2) is a subclass of Vector class - which is based on resizable array; so where is linked list implementation o...