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What is a stack trace, and how can I use it to debug my application errors?
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A stacktrace is a very helpful debugging tool. It shows the call stack (meaning, the stack of functions that were called up to that point) at the time an uncaught exception was thrown (or the time the stacktrace was generated manually). This is very useful because it doesn't only show you where t...
How can I add “href” attribute to a link dynamically using JavaScript?
...t something that works for you. It needs to work in all browsers, and that means you need to follow standards. FWIW, this works for me too (in Firefox), but I'm interested to know whether it is actually a standard way to do it. The W3C DOM specification (w3.org/TR/DOM-Level-2-Core/core.html) doesn't...
How do I show multiple recaptchas on a single page?
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this does not work ... means only the original captcha( the first one called <div id="myrecap"> here )only will be refreshed , and other not refreshed
– Oxi
Dec 1 '12 at 19:24
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Meaning of …interface{} (dot dot dot interface)
...r type prefixed with three dots (...) is called a variadic parameter. That means you can pass any number or arguments into that parameter (just like with fmt.Printf()). The function will receive the list of arguments for the parameter as a slice of the type declared for the parameter ([]interface{} ...
jQuery checkbox change and click event
...presumably) if you use <label for="cbId">cb name</label>. This means when you click the label it will check the box instead of directly clicking on the checkbox. (Not exactly the question, but various search results tend to come here)
<div id="OuterDivOrBody">
<input type="...
Perform Segue programmatically and pass parameters to the destination view
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This still bothers me - this means I have to trigger segue in one place, where I have the data that I want to send as parameters nicely isolated from anything else, but to add that data in a completely different place - the prepareForSegue, where we don'...
What is %2C in a URL?
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Simple & Easy answer,
The %2C means , comma in URL. when you add the String "abc,defg" in the url as parameter then that comma in the string which is abc , defg is changed to abc%2Cdefg .There is no need to worry about it.
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MySQL error code: 1175 during UPDATE in MySQL Workbench
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It looks like your MySql session has the safe-updates option set. This means that you can't update or delete records without specifying a key (ex. primary key) in the where clause.
Try:
SET SQL_SAFE_UPDATES = 0;
Or you can modify your query to follow the rule (use primary key in where clause...
How to check if there exists a process with a given pid in Python?
...; kill() can also raise EPERM (access denied) in which case that obviously means a process exists. This is supposed to work:
(edited as per Jason R. Coombs comments)
import errno
import os
def pid_exists(pid):
"""Check whether pid exists in the current process table.
UNIX only.
"""
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Items in JSON object are out of order using “json.dumps”?
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I mean init it when preserve the order, needs typing many '(' and ')'
– jean
Apr 17 '15 at 11:19
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