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Why are static variables considered evil?
...our class to execute a particular function 10,000 times, once those 10,000 calls were done, and you delete your references to the single instance, all your static variables could be garbage collected and reused.
Prevents certain re-use:
Also, static methods cannot be used to implement an interface...
What is Java String interning?
...tp://docs.oracle.com/javase/7/docs/api/java/lang/String.html#intern()
Basically doing String.intern() on a series of strings will ensure that all strings having same contents share same memory. So if you have list of names where 'john' appears 1000 times, by interning you ensure only one 'john' is ...
Why does the default parameterless constructor go away when you create one with parameters
...on with certain parameters. What would new FileStream() even mean?
So basically, if you accept the premise that providing a default constructor makes sense at all, I believe it makes a lot of sense to suppress it as soon as you provide your own constructor.
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subtract two times in python
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There is a very rare case when you call this function at some time like 23:59:59:9999. In that case, the date.today() before and the date.today() later will return a different value. It would be better to give the value date.today() to a variable.
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Why use getters and setters/accessors?
...ame, person.lastName, person.isHuman, person.hasReallyCommonFirstName, and calls person.update(), which sends a query out to the database, etc. Oh, that's where your memory leak was occurring.
Understanding a local piece of code at first glance is an important property of good readability that gett...
How do I create a MongoDB dump of my database?
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To dump your database for backup you call this command on your terminal
mongodump --db database_name --collection collection_name
To import your backup file to mongodb you can use the following command on your terminal
mongorestore --db database_name path_t...
.htm vs .html ? Which file extension naming is more correct? [closed]
...ways use the shorter .htm for our file names since file extensions are typically 3 characters long.
AND MORE ON: http://www.sightspecific.com/~mosh/WWW_FAQ/ext.html or http://www.sightspecific.com/~mosh/WWW_FAQ/ext.htm
I think I should add this part here:
There is one single slight difference bet...
What is the difference D3 datum vs. data?
...uldn't figure out for the past week! Thank you so much... always such stupid things that are wrong.
– Adam
Feb 24 '14 at 6:23
23
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How to check null objects in jQuery
...eem to have enough reputation to vote down the answer...)
Wolf wrote:
Calling length property on undefined
or a null object will cause IE and
webkit browsers to fail!
Instead try this:
// NOTE!! THE FOLLOWING IS WRONG; DO NOT USE! -- EleotleCram
if($("#something") !== null){
// do...
Using the “start” command with parameters passed to the started program
...
None of these answers worked for me.
Instead, I had to use the Call command:
Call "\\Path To Program\Program.exe" <parameters>
I'm not sure this actually waits for completion... the C++ Redistributable I was installing went fast enough that it didn't matter
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