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How to detect if a property exists on an ExpandoObject?
...blic object this[string key]
{
get
{
object value;
_innerDictionary.TryGetValue(key, out value);
return value;
}
set { _innerDictionary[key] = value; }
}
https://github.com/ASP-NET-MVC/aspnetwebstack/blob/master/src/System.Web.Mvc/ViewDataDictionary.cs
In o...
Easy way to print Perl array? (with a little formatting)
...ng 'local' to avoid having ripple effects throughout the script:
use 5.012_002;
use strict;
use warnings;
my @array = qw/ 1 2 3 4 5 /;
{
local $" = ', ';
print "@array\n"; # Interpolation.
}
OR with $,:
use feature q(say);
use strict;
use warnings;
my @array = qw/ 1 2 3 4 5 /;
{
l...
Finding child element of parent pure javascript
...ent
4. Then use document.QuerySelectorAll(paret.nodeName.toLowerCase()+"#"_parent.getAttribute("id")+" input " ); if you want input children of the parent node
let parent = document.querySelector("div.classnameofthediv")
let parent_node = parent.nodeName.toLowerCase()
let parent_clas_arr ...
When should I use uuid.uuid1() vs. uuid.uuid4() in python?
...to note when using uuid1, if you use the default call (without giving clock_seq parameter) you have a chance of running into collisions: you have only 14 bit of randomness (generating 18 entries within 100ns gives you roughly 1% chance of a collision see birthday paradox/attack). The problem will ne...
How can I remove a flag in C?
....
flags = flags & ~MASK; or flags &= ~MASK;.
Long Answer
ENABLE_WALK = 0 // 00000000
ENABLE_RUN = 1 // 00000001
ENABLE_SHOOT = 2 // 00000010
ENABLE_SHOOTRUN = 3 // 00000011
value = ENABLE_RUN // 00000001
value |= ENABLE_SHOOT // 00000011 or same as ENABLE_SHOOTRUN
W...
What is the dual table in Oracle?
...this wikipedia article may help clarify.
http://en.wikipedia.org/wiki/DUAL_table
The DUAL table is a special one-row
table present by default in all Oracle
database installations. It is suitable
for use in selecting a pseudocolumn
such as SYSDATE or USER The table has
a single VARCHAR...
Convert string to a variable name
...an.r-project.org/doc/FAQ/R-FAQ.html#How-can-I-turn-a-string-into-a-variable_003f
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How can I check whether a radio button is selected with JavaScript?
...nd you have HTML like this
<input type="radio" name="gender" id="gender_Male" value="Male" />
<input type="radio" name="gender" id="gender_Female" value="Female" />
For client-side validation, here's some Javascript to check which one is selected:
if(document.getElementById('gender_M...
How to prepend a string to a column value in MySQL?
...
update TICKET set status_details = CONCAT(status _details,'abc') where ticket_id=75108; ERROR 1583 (42000): Incorrect parameters in the call to native function 'CONCAT'
– nirmesh khandelwal
Jul 1 '13 at 13:45
...
C# if/then directives for debug vs release
...
DEBUG/_DEBUG should be defined in VS already.
Remove the #define DEBUG in your code. Set preprocessors in the build configuration for that specific build.
The reason it prints "Mode=Debug" is because of your #define and then skip...