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MySQL Select Query - Get only first 10 characters of a value
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SELECT SUBSTRING(subject, 1, 10) FROM tbl
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Composite Key with EF 4.1 Code First
...der = 1)]
[Required(ErrorMessage = "A ActivityName is required")]
[StringLength(50, ErrorMessage = "Activity Name must not exceed 50 characters")]
public string ActivityName { get; set; }
}
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How to add edge labels in Graphviz?
...orth being aware of the labeltooltip attribute. This allows an additional string to be attached to the label of an edge. This is easier for a user than the tooltip attribute, as it can be fiddly to hover directly on an edge. The syntax is as follows:
digraph G {
a -> b [label=" a to b" labe...
How can I use “puts” to the console without a line break in ruby on rails?
... I think setting stdout to sync is an overkill to output one string. Then if you app outputs a lot it will be slower.
– akostadinov
May 11 '17 at 20:44
add a com...
Invoke-WebRequest, POST with parameters
...quest needs to have the content type set to JSON and the body to be a JSON string. For example:
Invoke-WebRequest -UseBasicParsing http://example.com/service -ContentType "application/json" -Method POST -Body "{ 'ItemID':3661515, 'Name':'test'}"
or the equivalent for XML, etc.
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When to catch java.lang.Error?
...l get executed. If your JVM is OOMing, attempting to log may allocate more Strings which triggers another OOM.
– Jeeyoung Kim
Apr 19 '16 at 18:45
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Futures vs. Promises
...tionality from the "consumer/reader".
auto promise = std::promise<std::string>();
auto producer = std::thread([&]
{
promise.set_value("Hello World");
});
auto future = promise.get_future();
auto consumer = std::thread([&]
{
std::cout << future.get();
});
producer.joi...
Nested JSON objects - do I have to use arrays for everything?
...use arrays.
JSON values can be arrays, objects, or primitives (numbers or strings).
You can write JSON like this:
{
"stuff": {
"onetype": [
{"id":1,"name":"John Doe"},
{"id":2,"name":"Don Joeh"}
],
"othertype": {"id":2,"company":"ACME"}
}, ...
Does Ruby regular expression have a not match operator like “!~” in Perl?
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Back in perl, 'foobar' !~ /bar/ was perfectly perlish to test that the string doesn't contain "bar".
In Ruby, particularly with a modern style guide, I think a more explicit solution is more conventional and easy to understand:
input = 'foobar'
do_something unless input.match?(/bar/)
needs_ba...
SQL function as default parameter value?
...your example.
From MSDN:
Only a constant value, such as a
character string; a scalar function
(either a system, user-defined, or CLR
function); or NULL can be used as a
default.
The function GETDATE() returns a different value from time to time, so it is not a constant expression.
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