大约有 49,000 项符合查询结果（耗时：0.0717秒） [XML]
Symfony 2: How do I check if a user is not logged in inside a template?
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You can check if app.user is set.
{% if app.user %}
# user is logged in
{% else %}
# user is not logged in
{% endif %}
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How to calculate time in hours between two dates in iOS
...culate the time elapsed in hours between two times (possibly occurring on different days) in iOS?
5 Answers
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What is a good regular expression to match a URL? [duplicate]
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Regex if you want to ensure URL starts with HTTP/HTTPS:
https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)
If you do not require HTTP protocol:
[-a-zA-Z0-9@:%._\+~#=]{1,256...
Testing if jQueryUI has loaded
...te, and I think that jQueryUI may not have loaded properly. How can I test if jQueryUI has loaded?
5 Answers
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regex.test V.S. string.match to know if a string matches a regular expression
Many times I'm using the string match function to know if a string matches a regular expression.
3 Answers
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ConnectionTimeout versus SocketTimeout
...timeout occurs only upon starting the TCP connection. This usually happens if the remote machine does not answer. This means that the server has been shut down, you used the wrong IP/DNS name, wrong port or the network connection to the server is down.
A socket timeout is dedicated to monitor the c...
Fastest way to flatten / un-flatten nested JSON objects
...implementation:
Object.unflatten = function(data) {
"use strict";
if (Object(data) !== data || Array.isArray(data))
return data;
var regex = /\.?([^.\[\]]+)|\[(\d+)\]/g,
resultholder = {};
for (var p in data) {
var cur = resultholder,
prop = "",
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How can I make git ignore future revisions to a file?
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If someone else pulls the repo and edits the file, are changes in their directory ignored? I'm hoping they'd have to type --no-skip-worktree to add their changes.
– neaumusic
Dec 7 '17 a...
cleanest way to skip a foreach if array is empty [duplicate]
Not a major problem but I was wondering if there is a cleaner way to do this. It would be good to avoid nesting my code with an unnecessary if statement. If $items is empty php throws an error.
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Apply a function to every row of a matrix or a data frame
...function to each row. You pass extra arguments to the function as fourth, fifth, ... arguments to apply().
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