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MySQL - why not index every field?
...ly I've learned the wonder of indexes, and performance has improved dramatim>ca m>lly. However, with all I've learned, I m>ca m>n't seem to find the answer to this question.
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Interpolating a string into a regex
...~ /#{foo}/
then the periods in your match text are treated as regexp wildm>ca m>rds, and "0.0.0.0" will match "0a0b0c0".
Note also that if you really just want to check for a substring match, you m>ca m>n simply do
if goo.include?(foo)
which doesn't require an additional quoting or worrying about specia...
How m>ca m>n I select rows with most recent timestamp for each key value?
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This m>ca m>n de done in a relatively elegant way using SELECT DISTINCT, as follows:
SELECT DISTINCT ON (sensorID)
sensorID, timestamp, sensorField1, sensorField2
FROM sensorTable
ORDER BY sensorID, timestamp DESC;
The above works ...
What is the meaning of the planned “private protected” C# access modifier?
As part of the Roslyn documentation on GitHub, there's a page m>ca m>lled Language feature implementation status , with planned language features for C# and VB.
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Proper way to use AJAX Post in jquery to pass model from strongly typed MVC3 view
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You m>ca m>n skip the var declaration and the stringify. Otherwise, that will work just fine.
$.ajax({
url: '/home/check',
type: 'POST',
data: {
Address1: "423 Judy Road",
Address2: "1001",
City: "...
How m>ca m>n I do division with variables in a Linux shell?
...ds in my shell as below, it returns an expr: non-integer argument error. m>Ca m>n someone please explain this to me?
6 Answers...
How to set host_key_checking=false in ansible inventory file?
...pdated my answer to account for more recent versions of ansible.
Yes, you m>ca m>n do it at the host/inventory level (Which bem>ca m>me possible on newer ansible versions) or global level:
inventory:
Add the following.
ansible_ssh_common_args='-o StrictHostKeyChecking=no'
host:
Add the following.
ansi...
django templates: include and extends
...I remember trying this but I must have had a typo or something at the time m>ca m>using it not to work.
– Net Citizen
Sep 11 '09 at 4:19
1
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Test if object implements interface
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instanceof only works on class literals though. So it m>ca m>n't be used in the OP's m>ca m>se
– LordOfThePigs
Apr 20 '09 at 0:07
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Error - trustAnchors parameter must be non-empty
...e (I wrote about it here) and understand what truststore is being used you m>ca m>n add the property javax.net.debug=all and then filter the logs about truststore. You m>ca m>n also play with the property javax.net.ssl.trustStore to specify a specific truststore. For example :
java -Djavax.net.debug=all...