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What's the best practice for primary keys in tables?
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Just an extra comment on something that is often overlooked. Sometimes not using a surrogate key has benefits in the child tables. Let's say we have a design that allows you to run multiple companies within the one database (maybe it's a hosted solution, or whatever).
Let's say we have th...
What does a tilde do when it precedes an expression?
... to use .indexOf() as a boolean directly, then that won't work because sometimes it returns zero (when "something" is at the beginning of the string).
Of course, this works too:
if (someString.indexOf(something) >= 0) {
}
and it's considerably less mysterious.
Sometimes you'll also see this...
Command line progress bar in Java
I have a Java program running in command line mode.
I would like to display a progress bar, showing the percentage of job done.
The same kind of progress bar you would see using wget under unix.
Is this possible?
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Why is a combiner needed for reduce method that converts type in java 8
...w World of Java functional programming that, I have been assured countless times, "makes your code more concise and easier to read." Let's hope that examples of (finger quotes) concise clearness such as this remain few and far between.
– dnuttle
May 23 '19 at 1...
'Static readonly' vs. 'const'
...-site; this is double edged:
it is useless if the value is fetched at runtime, perhaps from config
if you change the value of a const, you need to rebuild all the clients
but it can be faster, as it avoids a method call...
...which might sometimes have been inlined by the JIT anyway
If the value...
How can I hide an HTML table row so that it takes up no space?
...ou include some code? I add style="display:none;" to my table rows all the time and it effectively hides the entire row.
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for each loop in Objective-C for accessing NSMutable dictionary
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Is this loop return same order all the time? Or do we need another way to use it for TableView sections?
– ymutlu
Oct 31 '14 at 14:55
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.gitignore exclude folder but include specific subfolder
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Ah, that explains it. No matter how many times I've read the gitignore documentation, I never understood when the reverted patterns don't work. With your explanation, it's now clear. The gitignore documentation needs a "recipe" section to explain how to do this.
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MySQL connection not working: 2002 No such file or directory
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you just saved me some precious time.
– uchamp
Feb 25 '13 at 2:02
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Maximum Year in Expiry Date of Credit Card
...ire. In fact they have been issuing cards for longer and longer periods of time. If you're trying to determine how far out into the future you should accommodate expiration dates for, err on the safe side and give your customers many years to choose from. That way you future proof your application.
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