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How to enable MySQL Query Log?
...able, disable and to see the logs on live servers without restarting.
Log all queries in mysql
Here is a summary:
If you don't want or cannot restart the MySQL server you can proceed like this on your running server:
Create your log tables (see answer)
Enable Query logging on the database
(No...
Remove the last three characters from a string
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read last 3 characters from string [Initially asked question]
You can use string.Substring and give it the starting index and it will get the substring starting from given index till end.
myString.Substring(myString.Length-3)
Retrieves a substring from this...
Can I change the height of an image in CSS :before/:after pseudo-elements?
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If that's the case, you shouldn't be using :after at all. It's not supported below IE8.
– Ansel Santosa
Jan 23 '12 at 21:08
25
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Use Font Awesome Icon As Favicon
...ith most browsers but IE (because MS hates you). Otherwise, well, you'll really have to save them as images first.
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Is there a way to @Autowire a bean that requires constructor arguments?
...he case; I don't necessarily have the ability to modify the code. Additionally, in my example, I'm using a String as the argument, but there are cases where the contructor requires other beans as arguments.
– Eric B.
Jul 19 '11 at 14:59
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Benefit of using Parcelable instead of serializing object
...our objects.
Also realize that Android provides two mechanisms that allow you to pass
data to another
process. The first is to pass a bundle to an activity using an intent,
and the second is to pass a
Parcelable to a service. These two mechanisms are not interchangeable and
...
Pass a data.frame column name to a function
...l_name,col1,col2){
df$col_name <- df$col1 + df$col2
df
}
#Call foo() like this:
foo(dat,z,x,y)
The problem here is that df$col1 doesn't evaluate the expression col1. It simply looks for a column in df literally called col1. This behavior is described in ?Extract under the secti...
Insert a commit before the root commit in Git?
...nd:
git checkout --orphan newroot
git rm -rf .
git clean -fd
git commit --allow-empty -m 'root commit'
Note that on very old versions of Git that lack the --orphan switch to checkout, you have to replace the first line with this:
git symbolic-ref HEAD refs/heads/newroot
2. Rewrite history to s...
What's the difference between the 'ref' and 'out' keywords?
...c to out is that the function has to assign to the out parameter. It's not allowed to leave it unassigned.
– Daniel Earwicker
Dec 23 '08 at 11:30
7
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Concatenate multiple files but include filename as section headers
... Of note, passing -n to grep also yields line numbers which allows you to write simple linters with pinpointing that could be picked up by, e.g., emacs.
– DepressedDaniel
Mar 13 '17 at 3:23
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