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Increment a database field by 1
...e a previously existing row, or insert it if it doesn't already exist, you can use the REPLACE syntax or the INSERT...ON DUPLICATE KEY UPDATE option (As Rob Van Dam demonstrated in his answer).
Inserting a new entry:
Or perhaps you're looking for something like INSERT...MAX(logins)+1? Essentially ...
How do I write a “tab” in Python?
...(filename, 'w')
f.write("hello\talex")
The \t inside the string is the escape sequence for the horizontal tabulation.
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How to limit depth for recursive file list?
... Dec 22 '10 at 13:31
Alberto ZaccagniAlberto Zaccagni
27.4k99 gold badges6969 silver badges101101 bronze badges
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How to get Core Data object from specific Object ID?
I can easily get an object's ID in Core Data using the following code:
3 Answers
3
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Redis is single-threaded, then how does it do concurrent I/O?
Trying to grasp some basics of Redis I came across an interesting blog post .
2 Answers
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How do I convert a Java 8 IntStream to a List?
...ntStream::boxed turns an IntStream into a Stream<Integer>, which you can then collect into a List:
theIntStream.boxed().collect(Collectors.toList())
The boxed method converts the int primitive values of an IntStream into a stream of Integer objects. The word "boxing" names the int ⬌ Integ...
Markdown vs markup - are they related?
...n bold) for the printers to use when producing the final version. This was called marking up the text.
A computer mark-up language is just a standardised short-hand for these sorts of annotations.
HTML is basically the web's standard mark-up language, but it's rather verbose.
A list in HTML:
&l...
JUnit 4 Test Suites
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You can create a suite like so. For example an AllTest suite would look something like this.
package my.package.tests;
@RunWith(Suite.class)
@SuiteClasses({
testMyService.class,
testMyBackend.class,
...
})
public c...
Guards vs. if-then-else vs. cases in Haskell
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From a technical standpoint, all three versions are equivalent.
That being said, my rule of thumb for styles is that if you can read it as if it was English (read | as "when", | otherwise as "otherwise" and = as "is" or "be"), you're pro...
How do I pass parameters into a PHP script through a webpage?
I am calling a PHP script whenever a webpage loads. However, there is a parameter that the PHP script needs to run (which I normally pass through the command line when I am testing the script).
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