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How do I check to see if a value is an integer in MySQL?
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I'll assume you want to check a string value. One nice way is the REGEXP operator, matching the string to a regular expression. Simply do
select field from table where field REGEXP '^-?[0-9]+$';
this is reasonably fast. If your field is numeric, just tes...
How can I concatenate two arrays in Java?
I need to concatenate two String arrays in Java.
61 Answers
61
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remove legend title in ggplot
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This replaces the title with an empty string and therefore causes extra space between the label and the legend box, which would be visible only if the legend had a box or background of a color different from where it is positioned. So it's alright for a quick and...
Unknown Column In Where Clause
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I believe you have an extra ( in your query before the (COUNT(*) which isn't closed anywhere.
– tftd
Nov 27 '12 at 16:09
3
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JQuery: How to call RESIZE event only once it's FINISHED resizing?
...se it like any other on or bind-event handler, except that you can pass an extra parameter as a last:
$(window).on('resize', function(e) {
console.log(e.type + '-event was 200ms not triggered');
}, 200);
http://jsfiddle.net/ARTsinn/EqqHx/
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Last iteration of enhanced for loop in java
...n't use "" + i, by the way - you don't really want concatenation here, and StringBuilder has a perfectly good append(int) overload.)
int[] array = {1, 2, 3...};
StringBuilder builder = new StringBuilder();
for (int i : array) {
if (builder.length() != 0) {
builder.append(",");
}
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How to call shell commands from Ruby
...ems.
Here are ways to execute a shell script:
cmd = "echo 'hi'" # Sample string that can be used
Kernel#` , commonly called backticks – `cmd`
This is like many other languages, including Bash, PHP, and Perl.
Returns the result (i.e. standard output) of the shell command.
Docs: http://ruby-...
use Winmerge inside of Git to file diff
...L\" \"$REMOTE\" \"$BASE\" \"$MERGED\"". There were a few incorrect escaped strings (note a few additional unwanted backslashes there right before the $ - I guess $ don't need to be escaped). Also, it was missing an end " after WinMergeU?.exe. Run git config --get mergetool.winmerge.cmd to see what h...
Is there any difference between a GUID and a UUID?
... way as a UUID. For example, the RSS specification defines GUIDs to be any string of your choosing, as long as it's unique, with an "isPermalink" attribute to specify that the value you're using is just a permalink back to the item being syndicated.
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Python strftime - date without leading 0?
... 2014'
And as of python3.6, this can be expressed as an inline formatted string:
Python 3.6.0a2 (v3.6.0a2:378893423552, Jun 13 2016, 14:44:21)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import datetime...