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Which is more efficient: Multiple MySQL tables or one large table?
...ow on top of a legacy system. I had to expand the old database tables with extra columns. I decided to make new tables for the new data. Some new features come in handy for the legacy system and now I can easily integrate them without having to rewrite too much of the old queries
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How to list imported modules?
...nd the alias, this is available in the name variable. Thus to generate the string import numpy as np do something like 'import %s as %s' % (val.__name__, name) where the yield statement is now.
– André C. Andersen
May 7 '17 at 19:30
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Manually map column names with class properties
... _mappers = mappers;
}
public SqlMapper.IMemberMap GetMember(string columnName)
{
foreach (var mapper in _mappers)
{
try
{
var result = mapper.GetMember(columnName);
if (result != null)
{
...
How to return multiple lines JSX in another return statement in React?
...act/blog/2017/09/26/react-v16.0.html#new-render-return-types-fragments-and-strings
EDIT: React 16.2 lets you surround a list of elements with <Fragment>…</Fragment> or even <>…</>, if you prefer that to an array: https://blog.jmes.tech/react-fragment-and-semantic-html/
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MySQL Conditional Insert
...t have dual already, you need to create it. CREATE TABLE dual ( dummy CHAR(1) DEFAULT 'x' NOT NULL CHECK (dummy = 'x') PRIMARY KEY ); INSERT INTO dual VALUES('x'); REVOKE ALL ON dual FROM PUBLIC; GRANT SELECT ON dual TO PUBLIC;
– Jonathan Leffler
Feb 24 '...
What does the regular expression /_/g mean?
...
Returns a new string with all the underscores in the source string replaced with spaces.
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Tips for debugging .htaccess rewrite rules
...Firefox, you can use the User Agent Switcher to create the fake user agent string and test.
2. Do not use 301 until you are done testing
I have seen so many posts where people are still testing their rules and they are using 301's. DON'T.
If you are not using suggestion 1 on your site, not o...
Is it possible to set private property via reflection?
...is returned</param>
/// <param name="propName">Propertyname as string.</param>
/// <returns>PropertyValue</returns>
public static T GetPrivatePropertyValue<T>(this object obj, string propName)
{
if (obj == null) throw new ArgumentNullException("obj");
Prop...
How to know if an object has an attribute in Python
... be working for checking for functions in namespace as well, e.g.: import string hasattr(string, "lower")
– riviera
Apr 8 '11 at 12:54
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How to center a (background) image within a div?
... If you want the entire div to be filled with the image and no extra space you should use background-size: cover; If you want the entire image to show without any part of the image being cut off or stretched you want to use background-size: contain;
– Zlerp
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