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Javascript !instanceof If Statement
...he outside.
if(!(obj instanceof Array)) {
//...
}
In this case, the order of precedence is important (https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Operators/Operator_Precedence). The ! operator precedes the instanceof operator.
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Why is f(i = -1, i = -1) undefined behavior?
I was reading about order of evaluation violations , and they give an example that puzzles me.
11 Answers
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Using capistrano to deploy from different git branches
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as stated by @lulalala I need to use lowercase -s in order for it to fetch the specified branch.
– Jahan
Dec 6 '13 at 23:35
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Add one row to pandas DataFrame
...ept when I created the data frame, the columns names were all in the wrong order...
– user5359531
Aug 9 '16 at 21:36
5
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How do I apply the for-each loop to every character in a String?
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In Java 8 we can solve it as:
String str = "xyz";
str.chars().forEachOrdered(i -> System.out.print((char)i));
The method chars() returns an IntStream as mentioned in doc:
Returns a stream of int zero-extending the char values from this
sequence. Any char which maps to a surrogat...
Getting “NoSuchMethodError: org.hamcrest.Matcher.describeMismatch” when running test in IntelliJ 10.
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Make sure the hamcrest jar is higher on the import order than your JUnit jar.
JUnit comes with its own org.hamcrest.Matcher class that is probably being used instead.
You can also download and use the junit-dep-4.10.jar instead which is JUnit without the hamcrest classes.
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Python group by
...8544'], 'type': 'NOT'}]
Note both of these do not respect the original order of the keys. You need an OrderedDict if you need to keep the order.
>>> from collections import OrderedDict
>>> res = OrderedDict()
>>> for v, k in input:
... if k in res: res[k].append(v)
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PHP filesize MB/KB conversion [duplicate]
...verage ~40% slower but for 1024 and above I get consistent averages on the order of 0.1%. Interesting!
– Alix Axel
May 25 '13 at 3:55
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Datatables: Cannot read property 'mData' of undefined
...columns doesn't add up. I didn't have any conditions on the table, such as order or sortable. I did add those after I got it working.
– Greg
Mar 24 '18 at 4:38
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Best design for a changelog / auditing database table? [closed]
...ed/updated/deleted a record
with ID=X in the table Foo and when?
So, in order to be able to answer such questions quickly (using SQL), we ended up having two additional columns in the audit table
object type (or table name)
object ID
That's when design of our audit log really stabilized (for a...