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do { … } while (0) — what is it good for? [duplicate]
...
It helps to group multiple statements into a single one so that a function-like macro can actually be used as a function. Suppose you have:
#define FOO(n) foo(n);bar(n)
and you do:
void foobar(int n) {
if (n)
FOO(n);
}
the...
How to set a value of a variable inside a template code?
...Error, "%r tag had invalid arguments" % tag_name
new_val, var_name = m.groups()
if not (new_val[0] == new_val[-1] and new_val[0] in ('"', "'")):
raise template.TemplateSyntaxError, "%r tag's argument should be in quotes" % tag_name
return SetVarNode(new_val[1:-1], var_name)
Thi...
Query to list number of records in each table in a database
... NOT LIKE 'dt%' AND
i.OBJECT_ID > 255 AND
i.index_id <= 1
GROUP BY
t.NAME, i.object_id, i.index_id, i.name, p.[Rows]
ORDER BY
object_name(i.object_id)
In my opinion, it's easier to handle than the sp_msforeachtable output.
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Why rgb and not cmy? [closed]
...ough it doesn't matter what color model you use: the primary colors of one group are the secondary colors of the second one and viceversa.
P.D.: my father worked at graphic arts, this is why i know this... :-P
share
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Export/import jobs in Jenkins
...kins/jobs/-the-project-name-/config.xml
Owned by jenkins user and jenkins group with 644 permissions. Copying the file to and from here should work. I haven't tried changing it directly but have backed-up the config from this spot in case the project needs to be setup again.
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How to set value of input text using jQuery
...default file upload browse button. This is the html:
<div class="form-group">
@Html.LabelFor(model => model.FileName, htmlAttributes: new { @class = "col-md-2 control-label" })
<div class="col-md-1 btn btn-sn btn-primary" id="browseButton" onclick="$(this).parent().fin...
How to fix 'sudo: no tty present and no askpass program specified' error?
...olution I was what I was needing. A existing configuration line (for wheel group) also matched my sudo command but without the NOPASSWD: entry. Placing my new line after it gave it the priority, allowing no password use for the specific command I needed.
– anthony
...
Get program execution time in the shell
...tire pipeline as-is (by virtue of being a Bash keyword), you need to use a group command ({ ...; ...; }) to time multiple commands: time -p { i=x; while read line; do x=x; done < /path/to/file.txt; }
– mklement0
Oct 30 '16 at 3:55
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Memcached vs. Redis? [closed]
...r strings.
Hashes are useful as a namespace, or when you want to logically group many keys. With a hash you can grab all the members efficiently, expire all the members together, delete all the members together, etc. Great for any use case where you have several key/value pairs that need to grouped....
Splitting a list into N parts of approximately equal length
...50, 51, 52, 53, 54, 55]
This will assign the extra elements to the final group which is not perfect but well within your specification of "roughly N equal parts" :-) By that, I mean 56 elements would be better as (19,19,18) whereas this gives (18,18,20).
You can get the more balanced output with ...