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psycopg2: insert multiple rows with one query
... do you have to dick around with escaping strings and timestamps etc?
– CpILL
Jun 13 '17 at 9:35
Yes, you'll...
django unit tests without a db
...er'
Now, when running only non-db-dependent tests, my test suite runs an order of magnitude faster! :)
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Ruby function to remove all white spaces?
... question used the phrase "all whitespace", which includes tabs, newlines, etc. This proposed answer will not remove those other whitespace characters. As for "overly complex", I suggest comparing the simple regular expression to .delete(' ').delete('\t').delete('\n') ..., which is overly verbose an...
What uses are there for “placement new”?
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We use it with custom memory pools. Just a sketch:
class Pool {
public:
Pool() { /* implementation details irrelevant */ };
virtual ~Pool() { /* ditto */ };
virtual void *allocate(size_t);
virtual void deallocate(void *);
static Pool::misc_pool() ...
Why does this C++ snippet compile (non-void function does not return a value) [duplicate]
...return, it is considerably harder to prove that it is missing a return. In order to lift compiler vendors of this burden, the standard does not require this to generate an error.
So compiler vendors are free to generate a warning if they are quite sure that a function is missing a return and the us...
Search all of Git history for a string? [duplicate]
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In order to avoid seeing matches from vendor/cache/ and public/assets/, change the grep line in this answer to: git grep -F 'password' $revision | grep -v ':vendor/cache/' | grep -v ':public/assets/'
– user...
HTML in string resource?
...or the older Html.fromHtml).
This also supports more tags like HTML links etc., not only formatting like getString method.
For example something like this should work:
<string name="html_message">Hello &lt;b>World&lt;/b>.</string>
val text = getString(R.string.html_mess...
How do I reference a javascript object property with a hyphen in it?
Using this script to make a style object of all the inherited etc styles.
11 Answers
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Java optional parameters
...e optional parameter, but you would need to check the length of the array, etc. so it's not super clean :| If you want "one parameter" optional parameter then you may as well just declare two methods (one overloaded doSomething() { doSomething(true); } no arrays to deal with, no ambiguity
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Piping buffer to external command in Vim
...rnal stdin from the command line:
vim -es +"w >> /dev/stdout" -cq! /etc/hosts
It's useful for scripting purposes.
For more command-line tricks, check:
How to write whole buffer to standard output from the command line?
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