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Join vs. sub-query
...queries can be slower than LEFT [OUTER] JOIN, but in my opinion their strength is slightly higher readability.
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Reading a binary file with python
...ent like this:
with open(fileName, mode='rb') as file: # b is important -> binary
fileContent = file.read()
then "unpack" binary data using struct.unpack:
The start bytes: struct.unpack("iiiii", fileContent[:20])
The body: ignore the heading bytes and the trailing byte (= 24); The remain...
Are email addresses case sensitive?
...y late to this post, but I've got something slightly different to say...
>> "Are email addresses case sensitive?"
Well, "It Depends..." (TM)
Some organizations actually think that's a good idea and their email servers enforce case sensitivity.
So, for those crazy places, "Yes, Emails are...
AngularJS : When to use service instead of factory
... providers is a specialized version of the other, in this order: provider > factory > value / constant / service.
So long the provider does what you can you can use the provider further down the chain which would result in writing less code. If it doesn't accomplish what you want you can go u...
Struct like objects in Java
...ossible solution would look like this:
public property String foo;
a->Foo = b->Foo;
Update: It's highly unlikely that property support will be added in Java 7 or perhaps ever. Other JVM languages like Groovy, Scala, etc do support this feature now. - Alex Miller
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Possible to make labels appear when hovering over a point in matplotlib?
...xstyle="round", fc="w"),
arrowprops=dict(arrowstyle="->"))
annot.set_visible(False)
def update_annot(ind):
pos = sc.get_offsets()[ind["ind"][0]]
annot.xy = pos
text = "{}, {}".format(" ".join(list(map(str,ind["ind"]))),
" ".join([names...
How can I get the sha1 hash of a string in node.js?
...= crypto.createHash('sha1')
shasum.update('foo')
shasum.digest('hex') // => "0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33"
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Parse string to DateTime in C#
...M-yyyy", "dd.MM.yyyy" };
(new[] { "15-01-2019", "15.01.2019" }).Select(s => s.ToDate(patterns)).Dump();
which will convert the dates in the array on the fly by using the patterns and dump them to the console.
Some background about TryParseExact
Finally, Here are some comments about the bac...
What is the difference between C# and .NET?
...tive code I mean you write a code c# the conversion will be like this C# => CLR => Native code. Then it will run all platforms like linux or windows
– logeshpalani98
Jul 20 '19 at 17:20
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Setting an object to null vs Dispose()
... collection. You might sometimes want to do it if it's a member variable, although in my experience it's rare for "part" of an object to no longer be needed. When it's a local variable, the JIT is usually smart enough (in release mode) to know when you're not going to use a reference again. For exam...