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Run Cron job every N minutes plus offset
...t minute in the range (0), then at all successive minutes that are distant from the first by step (1), until the last (59).
Which is why */20 * * * * will run at 0 minutes, 20 minutes after, and 40 minutes after -- which is the same as every 20 minutes. However, */25 * * * * will run at 0 minutes, ...
Converting Go struct to JSON
...ue:
I was having trouble converting struct to JSON, sending it as response from Golang, then, later catch the same in JavaScript via Ajax.
Wasted a lot of time, so posting solution here.
In Go:
// web server
type Foo struct {
Number int `json:"number"`
Title string `json:"title"`
}
foo...
Ternary Operator Similar To ?:
...
From Tony Morris' Lambda Blog:
I hear this question a lot. Yes it does. Instead of c ? p : q, it is
written if(c) p else q.
This may not be preferable. Perhaps you’d like to write it using the
same syntax as Ja...
How to change the style of alert box?
...his gives a nice looking alert box.
Simply include the required libraries from here, and use the following piece of code to display the alert box.
alertify.confirm("This is a confirm dialog.",
function(){
alertify.success('Ok');
},
function(){
alertify.error('Cancel');
});
The ou...
How can I know when an EditText loses focus?
...ngeListener(this);
then android studio will prompt you to add the method from the interface, accept it...
it will be like:
@Override
public void onFocusChange(View v, boolean hasFocus) {
// todo your code here...
}
and as you've got a factorized code, you'll just have to do that:
@Override
pub...
JavaScript data grid for millions of rows [closed]
... have the responses populating a bigdata array, and the smaller data pulls from the bigdata array. The rest of the program uses the smaller data array, except for the scroll-bar measurement and a few other places that are now unbounded for a large number of rows. All in all, was much easier than wri...
Is there a TRY CATCH command in Bash
...
# this subshell is a scope of try
# try
(
# this flag will make to exit from current subshell on any error
# inside it (all functions run inside will also break on any error)
set -e
a
b
# do more stuff here
)
# and here we catch errors
# catch
errorCode=$?
if [ $errorCode -ne 0 ]; then
...
new Date() works differently in Chrome and Firefox
...h, unfortunately the date-parsing algorithms are implementation-dependent. From the specification of Date.parse (which is used by new Date):
The String may be interpreted as a local time, a UTC time, or a time in some other time zone, depending on the contents of the String. The function first a...
How to pipe input to a Bash while loop and preserve variables after loop ends
...he { ... }. You mention this in the question. AFAIK, you can do a return from within these inside a function.
Bash also provides the shopt builtin and one of its many options is:
lastpipe
If set, and job control is not active, the shell runs the last command of a pipeline not executed in the bac...
PHP Error handling: die() Vs trigger_error() Vs throw Exception
...by using different levels of error messages) and you can hide those errors from end-users (using set_error_handler()) but still have them be displayed to you during testing.
Also trigger_error() can produce non-fatal messages important during development that can be suppressed in production code us...