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Deep copy of a dict in python
... )
my_dict1['b']='z'
my_copy
Out[42]: {'b': {'b': 'z'}, 'c': {'c': 3}}
By using Deepcopy() I can eliminate the semi-shallow behavior, but I think one must decide which approach is right for your application. In most cases you may not care, but should be aware of the possible pitfalls... final e...
What is the advantage of using heredoc in PHP? [closed]
...f stuff, your syntax highlighting breaks, you have to type more characters by simple escaping from PHP and PHP has more commands to execute instead of a single echo. Also, you can set a Heredoc string to a variable and echo it later. Escaping PHP for your HTML means it gets printed out then and ther...
Clear form fields with jQuery
... to avoid removing checkbox values, I used the following, inspired by your answer: $(':input').not(':button, :submit, :reset, :hidden').removeAttr('checked').removeAttr('selected').not(':checkbox, select').val('').removeAttr('value');. It will remove default values (i.e. value="something", b...
Check if a row exists, otherwise insert
...ow in a table. If the row doesn't exist, insert it. All this steps wrapped by a transaction.
11 Answers
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How can I use break or continue within for loop in Twig template?
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This can be nearly done by setting a new variable as a flag to break iterating:
{% set break = false %}
{% for post in posts if not break %}
<h2>{{ post.heading }}</h2>
{% if post.id == 10 %}
{% set break = true %}
{...
How do I test if a string is empty in Objective-C?
...ear all the blank spaces on both sides of the string:
[stringObject stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet] ];
One good idea is create one macro, so you don't have to type this monster line:
#define allTrim( object ) [object stringByTrimmingCharactersInSet:[NSChar...
What's the difference between TRUNCATE and DELETE in SQL
...L, Truncate is DDL (What is DDL and DML?)
Commit and Rollback
Variable by vendor
SQL*Server
Truncate can be rolled back.
PostgreSQL
Truncate can be rolled back.
Oracle
Because a TRUNCATE is DDL it involves two commits, one before and one after the statement execution. Truncate can therefor...
How to get jQuery dropdown value onchange event
... imageUploader: {
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...
How to make the corners of a button round?
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it crashed: Caused by: org.xmlpull.v1.XmlPullParserException: Binary XML file line #24: <item> tag requires a 'drawable' attribute or child tag defining a drawable
– Zennichimaro
Jul 3 '14 at 7:50
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What is the fastest method for selecting descendant elements in jQuery?
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By identical you mean that they both use the same logic to search?
– Marko
Jul 5 '10 at 7:35
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