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Change one value based on another value in pandas
...loc for overwrite assignment operations.
Another way to do it is to use what is called chained assignment. The behavior of this is less stable and so it is not considered the best solution (it is explicitly discouraged in the docs), but it is useful to know about:
import pandas
df = pandas.read_...
Can't start Eclipse - Java was started but returned exit code=13
...ample, the JRE download page uses the bit-ness of the browser to determine what bit-ness download to offer you, and many people use(d) 32-bit browsers even though they run 64-bit Windows).
The best way to fix this, assuming you do in fact have 64-bit JRE or JDK on your system, is to specify in ecli...
Why is try {…} finally {…} good; try {…} catch{} bad?
... then the exception will keep going, to be handled by something that knows what to do with it.
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Interface type check with Typescript
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You can achieve what you want without the instanceof keyword as you can write custom type guards now:
interface A{
member:string;
}
function instanceOfA(object: any): object is A {
return 'member' in object;
}
var a:any={member:"f...
Get last n lines of a file, similar to tail
...small, start from begining
f.seek(0,0)
# only read what was not read
blocks.append(f.read(block_end_byte))
lines_found = blocks[-1].count('\n')
lines_to_go -= lines_found
block_end_byte -= BLOCK_SIZE
block_number -= 1
all_read_t...
What is the best way to do a substring in a batch file?
...seful format that doesn't depend on the user's settings. Also I'm not sure what this comment is doing here, as this question was not about date or time.
– Joey
May 22 '18 at 7:32
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What do querySelectorAll and getElementsBy* methods return?
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Note that the whatwg specs that are being implemented by the browsers do differ from the w3c ones here, the former (and hence current browsers) return an HTMLCollection for getElementsByClassName, not a NodeList. Minor, but may confuse som...
Doctrine - How to print out the real sql, not just the prepared statement?
...nts, which means :
Sending the statement, for it to be prepared (this is what is returned by $query->getSql())
And, then, sending the parameters (returned by $query->getParameters())
and executing the prepared statements
This means there is never a "real" SQL query on the PHP side — so, ...
What is a “memory stomp”?
...an example, this code:
char buffer[8];
buffer[8] = 'a';
will "stomp" on whatever happens to be in the next thing in memory after buffer. Generally speaking, 'stomping' is when memory is written to unintentionally.
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How to make return key on iPhone make keyboard disappear?
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Hey mate, I've done what you have said above but I still can't get the keyboard to disappear. Do you have any ideas? Thanks.
– K.Honda
Jun 1 '11 at 9:11
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