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What is the difference between varchar and varchar2 in Oracle?
...t rationale before, that's useful. Thanks. For the record, it is still totally ridiculous that the main character type in Oracle is "varchar2". Doesn't that strike anybody else as a terrible kludge? Seems like how I would have solved some problem in my first week of learning to program.
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LINQ Single vs First
...should NOT use one, when you mean the other.
Note: In my code, I will typically use FirstOrDefault() and SingleOrDefault() but that's a different question.
Take, for example, a table that stores Customers in different languages using a Composite Key ( ID, Lang ):
DBContext db = new DBContext();
Cust...
Pushing app to heroku problem
...
For all the people who this does not work, check your ~/.heroku/credentials
If the email or token does not match the account, you won't see your apps.
sh...
React JSX: selecting “selected” on selected option
...ect>
For more info, see the React select tag doc.
Also, React automatically understands booleans for this purpose, so you can simply write (note: not recommended)
<option value={option.value} selected={optionsState == option.value}>{option.label}</option>
and it will output 'selecte...
Cross Browser Flash Detection in Javascript
... Same here, SWFObject works great for me as well (used to be called FlashObject, but Adobe threw a hissy fit)
– davr
Oct 1 '08 at 20:00
17
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Getting a list of values from a list of dicts
... simple at first glance, because find returns match objects, which include all kinds of things besides just the matched value, such as a path directly to each item. But for more complex expressions, being able to specify a path like '*.[*].value' instead of a comprehension clause for each * can make...
How to build jars from IntelliJ properly?
....
The above sets the "skeleton" to where the jar will be saved to. To actually build and save it do the following:
Extract to the target Jar
OK
Build | Build Artifact | Build
Try Extracting the .jar file from
ProjectName | out | artifacts | ProjectName_jar | ProjectName.jar
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Do I use , , or for SVG files?
...svgprimer.html#SVG_in_HTML
If you use <object> then you get raster fallback for free*:
<object data="your.svg" type="image/svg+xml">
<img src="yourfallback.jpg" />
</object>
*) Well, not quite for free, because some browsers download both resources, see Larry's suggesti...
Column order manipulation using col-lg-push and col-lg-pull in Twitter Bootstrap 3
...and tried to follow column ordering as shown in this page but hit the wall. I don't understand why such a code works nor how to correctly specify the setting. What I want to show is one grid, which is consisted of length 5, and the other length 5, and finally one length 2 grid.
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How to read a single character from the user?
... except ImportError:
self.impl = _GetchUnix()
def __call__(self): return self.impl()
class _GetchUnix:
def __init__(self):
import tty, sys
def __call__(self):
import sys, tty, termios
fd = sys.stdin.fileno()
old_settings = termios.tcge...